2006 TEXAS TAKS TEST GRADE 11 (EXIT) – SCIENCE NEEDED

2006 TEXAS TAKS TEST
GRADE 11 (EXIT) – SCIENCE
NEEDED CORRECT TO PASS: 29
TOTAL POSSIBLE: 55
This file contains the Texas Assessment of Knowledge and Skills administered in Spring, 2006, along with the
answer key, learning objectives, and, for writing tests, the scoring guide. This document is available to the
public under Texas state law. This file was created from information released by the Texas Education Agency,
which is the state agency that develops and administers the tests.
The number of correct answers required to "pass" this test is shown above. While it is supposedly around 70%,
the exact number for each test is determined after the tests have been graded, and has been lower in recent
years, making it possible to pass the test without learning some important areas of study. Because of this, I
believe that making the passing grade should not be considered "good enough." A student's goal should be to
master each of the objectives covered by the test.
The test in this file may differ somewhat in appearance from the printed version, due to formatting limitations.
Since TAKS questions are changed each year, some proposed questions for future tests are included in each
year's exams in order to evaluate the questions. Questions being evaluated for future tests do not count toward
a student's score. Those questions are also not included in the version of the test made available to the public,
until such time as they become part of the official test.
The test materials in this file are copyright ©2006, Texas Education Agency. All rights reserved. Reproduction
of all or portions of this work is prohibited without express written permission from the Texas Education
Agency. The availability of these tests on the Internet does not extend to and specifically excludes any use of
these materials for commercial purposes. All reproductions of tests or portions of tests must include notice of
the Texas Education Agency's copyright on each document. Specific copyright information is available at
http://www.tea.state.tx.us/student.assessment/resources/release/copyright.html
Questions and comments about the tests should be directed to:
Texas Education Agency
Student Assessment Division
1701 N. Congress Ave. Room 3-100
Austin, Texas 78701
phone: 512-463-9536
www.tea.state.tx.us/student.assessment
For comments and questions about this file or the web site, you can e-mail me at [email protected], or
write to me at the address below. Please include your full name and home address. To download additional
tests, go to www.scotthochberg.com.
All costs for posting this material on this web site have been paid for by the:
Scott Hochberg Campaign
6000 Reims #2605
Houston, TX 77036.
No tax dollars were used for these purposes.
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SCIENCE
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FORMULA CHART
Density =
(
mass
volume
heat gained
or lost
D=
in
change in
specific
) = ( mass
grams )( temperature )( heat )
m
v
Q = (m)(ΔT)(Cp )
d
t
vf − vi
a=
Δt
Speed =
distance traveled
time
final velocity − initial velocity
Acceleration =
change in time
v=
Momentum = mass × velocity
p = mv
Force = mass × acceleration
F = ma
Work = force × distance
W = Fd
Power =
W
t
WO
% =
× 100
WI
work
time
P=
work output
× 100
work input
1
Kinetic energy = 2 (mass × velocity 2)
% efficiency =
KE =
mv 2
2
Gravitational potential energy = mass × acceleration due to gravity × height
PE = mgh
Energy = mass × (speed of light) 2
E = mc 2
Velocity of a wave = frequency × wavelength
v = fλ
Current =
voltage
resistance
I=
V
R
Electrical power = voltage × current
P = VI
Electrical energy = power × time
E = Pt
Constants/Conversions
g = acceleration due to gravity = 9.8 m/s 2
c = speed of light = 3 × 10 8 m/s
speed of sound = 343 m/s at sea level and 20°C
1 cm 3 = 1 mL
1 wave cycle/second = 1 hertz (Hz)
1 calorie (cal) = 4.18 joules
1000 calories (cal) = 1 Calorie (Cal) = 1 kilocalorie (kcal)
newton (N) = kgm/s 2
joule (J) = Nm
watt (W) = J/s = Nm/s
volt (V)
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ampere (A)
ohm (Ω)
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7
6
5
4
4
IVB
5
VB
6
VIB
7
VIIB
8
9
VIII
10
11
IB
12
IIB
Y
88.906
38
Sr
37
Rb
Lanthanum
89
Ac
227.028
56
Ba
137.33
Barium
88
Ra
226.025
Radium
55
Cs
132.905
Cesium
87
Fr
(223)
Francium
(261)
Rf
104
Hafnium
178.49
Hf
72
Zirconium
91.224
Zr
40
Titanium
Rutherfordium
Actinide Series
Lanthanide Series
Actinium
138.906
La
57
Yttrium
87.62
Strontium
85.468
Rubidium
39
Scandium
Calcium
Potassium
Ti
47.88
Sc
22
44.956
Ca
40.08
K
20
19
39.098
24.305
Magnesium
Mg
Na
Sodium
12
11
22.990
9.012
Beryllium
6.941
Lithium
21
(98)
Tc
43
Manganese
54.938
Mn
25
144.24
(145)
Pm
61
Hassium
(265)
Hs
108
Osmium
190.23
Os
76
Ruthenium
101.07
Ru
44
Iron
55.847
Fe
26
91
Pa
231.036
Protactinium
90
Th
232.038
Thorium
Uranium
238.029
U
92
Neptunium
237.048
Np
93
Praseodymium Neodymium Promethium
140.908
Cerium
140.12
Nd
60
59
Pr
58
Ce
Bohrium
(263)
Seaborgium
(262)
Bh
107
Rhenium
186.207
Re
75
(262)
Sg
106
Tungsten
183.84
W
74
Molybdenum Technetium
95.94
Mo
42
Chromium
51.996
Cr
24
Dubnium
Db
105
Tantalum
180.948
Ta
73
Niobium
92.906
Nb
41
Vanadium
50.942
V
23
Plutonium
(244)
Pu
94
Samarium
150.36
Sm
62
Meitnerium
(266)
Mt
109
Iridium
192.22
Ir
77
Rhodium
102.906
Rh
45
Cobalt
58.933
Co
27
Americium
(243)
Am
95
Europium
151.97
Eu
63
(269)
110
Platinum
195.08
Pt
78
Palladium
106.42
Pd
46
Nickel
58.69
Ni
28
Mercury
200.59
Hg
80
Cadmium
112.41
Cd
48
Zinc
Thallium
204.383
Tl
81
Indium
114.82
In
49
Gallium
Ga
69.72
Zn
31
65.39
30
Aluminum
26.982
Al
13
Boron
Lead
207.2
Pb
82
Tin
118.71
Sn
50
Germanium
72.61
Ge
32
Silicon
28.086
Si
14
Carbon
12.011
C
6
14
IVA
Curium
(247)
Cm
96
Gadolinium
157.25
Gd
64
Berkelium
(247)
Bk
97
Terbium
158.925
Tb
65
Californium
(251)
Cf
98
Dysprosium
162.50
Dy
66
Einsteinium
(252)
Es
99
Holmium
164.930
Ho
67
Mass numbers in parentheses are those of
the most stable or most common isotope.
Gold
196.967
Au
79
Silver
107.868
Ag
47
Copper
63.546
Cu
29
10.81
3
IIIB
B
Be
Li
5
4
3
13
IIIA
2
IIA
1.008
30.974
P
15
Nitrogen
14.007
N
7
15
VA
Fermium
(257)
Fm
100
Erbium
167.26
Er
68
Bismuth
208.980
Bi
83
Antimony
121.763
Sb
51
Arsenic
74.922
As
33
Phosphorus
Name
Nobelium
(259)
No
102
Ytterbium
173.04
Yb
70
Astatine
(210)
At
85
Iodine
126.904
I
53
Bromine
79.904
Br
35
Chlorine
35.453
Cl
17
Fluorine
18.998
F
9
17
VIIA
Lawrencium
(262)
Lr
103
Lutetium
174.967
Lu
71
Radon
(222)
Rn
86
Xenon
131.29
Xe
54
Krypton
83.80
Kr
36
Argon
39.948
Ar
18
Neon
20.179
Ne
10
Helium
4.0026
Revised October 15, 2001
Mendelevium
(258)
Md
101
Thulium
168.934
Tm
69
Polonium
(209)
Po
84
Tellurium
127.60
Te
52
Selenium
78.96
Se
34
Sulfur
32.066
S
16
Oxygen
15.999
O
8
16
VIA
He
2
18
VIIIA
9:16 AM
3
Atomic mass
Hydrogen
H
Si
28.086
Symbol
Silicon
14
Atomic number
6/12/06
2
1
1
Group
1
IA
Periodic Table of the Elements
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DIRECTIONS
Read each question and choose the best answer. Then fill in the correct answer on your answer
document.
SAMPLE A
When a 10% hydrochloric acid solution is
heated in an open test tube, the test tube
should always be pointed —
A
so bubbles are visible
B
at a 180° angle from the flame
C
toward a ventilated area
D* away from nearby people
10/11 Science Sample A
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SAMPLE B
Mass = 40 g
Volume = 20 mL
The picture shows a cube that contains 20 mL of a solution. The solution has a mass of 40 grams. What is
the density in g/mL of this solution? Record and bubble in your answer on the answer document.
Correct Answer:
2
10/11 Science Sample B
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2
=
+
Blue
Clear
Clear
The bacteria Bacillus thuringiensis produce
protein crystals that are toxic to the digestive
system of insects. How can these bacteria be
used to control insects in crops?
F* Apply the bacteria to growing plants.
Blue
G
Expose the bacteria to low levels of light.
H
Remove plants from areas containing the
bacteria.
J
Treat the bacteria with a solution of the
protein crystals.
After 25 minutes
1
The picture shows the results of pouring a
blue liquid into a clear liquid and allowing the
mixture to settle for 25 minutes. Compared to
the clear liquid, the blue liquid is more —
A
11EN01B02CZ04060
massive
B* dense
C
viscous
D
soluble
11EN04I07AZ03333
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The Collared Peccary
The collared peccary is often mistaken for a pig. It has a
short pig-like snout and crushing molars. The peccary has a
mass of 10–20 kg and a shoulder height of about 50 cm.
The collared peccary is omnivorous, eating mostly roots,
seeds, fruit, cacti, and occasionally insects and mice.
Peccaries travel in herds of 6–30 animals. The natural
enemies of the peccary are bobcats and coyotes.
3
Which of these is a food web based on the relationships described above?
Bobcats
Coyotes
Insects
Bobcats
A
Plants
Coyotes
Peccaries
C
Insects
Peccaries
Mice
Plants
Plants
Mice
Coyotes
Plants
B*
D
Peccaries
Bobcats
Cacti
Mice
Insects
Peccaries
Insects
Bobcats
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5
Which of these could be used to determine
whether a substance is a base?
A
Thermometer
B* Litmus paper
C
Balance
D
Bunsen burner
© Getty Images (29181.JPG)
11EN01B02AZ04010
4
This picture shows a small section of a solar
power plant. Which of these decreases the
energy production at such power plants?
F* Cloudy skies
G
Ozone in the air
H
Hot weather
J
Low humidity
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Kidneys and Dialysis
Laser Light Striking a DVD
•
A
•
•
•
6
When a DVD is read, laser light touches
the DVD surface and is then measured at
location A. What allows light to return to
location A after striking the DVD surface?
F
Conduction
G
Refraction
H
Magnification
•
8
Proteins and other large molecules
cannot move through the membranes
of healthy kidneys.
The presence of large molecules in
urine is an indication of unhealthy
kidneys.
Dialysis is a medical treatment that
does the work for failing kidneys.
In dialysis, an artificial membrane
impermeable to large molecules is
used.
Dialysis lowers protein levels in urine.
The box contains some facts about kidneys
and dialysis. Which of the following best
explains why dialysis works?
J* Reflection
11EN05I05BZ04422
F
Dialysis reduces the size of proteins.
G
Proteins are dissolved by urine.
H* Dialysis filters proteins from solution.
J
Proteins transport membrane fragments.
11EN02B04BZ04084
7
Which of these best explains how mutation
can be beneficial to an organism?
9
The bonding characteristics of oxygen are
most similar to the bonding characteristics
of —
A* Phenotypic change may create an
advantage over other organisms.
A
hydrogen
B
Recombined genetic material improves
genotype stability.
B
silicon
C
helium
C
Mitosis becomes a favored means of
reproduction.
D
Deoxyribose sugars develop into
additional nucleotides.
D* sulfur
11EN04I07DZ03349
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How is the excretory system most likely to
respond when an animal is thirsty?
F
By relaxing the smooth muscles
G* By retaining body fluids
12
An advertisement claims that a certain truck
has the most powerful engine in its class. If
the engine has more power, which of the
following can the truck’s engine do, compared
to every other engine in its class?
H
By absorbing heat from lymph glands
F
Produce fewer emissions
J
By releasing hormones
G
Operate more efficiently
11EN02B10BZ04174
H* Perform work faster
J
Accelerate longer
11EN05I04AZ04404
11
Compounds with the same chemical
composition may have different densities
because they —
A
have differences in reactivity
B
are able to bond with oxygen
C
vary in solubility
D* exist in different phases
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N2
6
1
N2
7
5
Soil
13
4
NH3
(bacterial action)
NO3–
NO2–
2
3
The diagram shows several phases of the nitrogen cycle. Which of the following describes the most
likely effect of removing some plants from the area by using chemical herbicides?
A
The rate of erosion of rocks on the ground would be slowed.
B* The flow of necessary nutrients would be disrupted.
C
The ability of plants to complete photosynthesis would be increased.
D
The infiltration of water into the ground would be halted.
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Which of the following cannot metabolize
nutrients?
15
About 10% of the energy at one trophic level is
passed to the next level. What usually
happens to the energy that is not passed to
the next trophic level or used to carry out life
processes?
A* It is given off as heat.
F
B
It is stored as vitamins.
C
It is used in reproduction.
D
It is used in protein synthesis.
11EN03B09DZ04702
G*
H
2C2H2(g) + 5O2(g) → 4CO2(g) + ___
16
Which additional product balances this
reaction?
J
11EN03B04CZ04196
F
4OH(aq)
G
CH4(g)
H
H2O2(g)
J* 2H2O(g)
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An empty cup was tightly covered with plastic
wrap, and a few grains of salt were sprinkled
on top of the plastic. When a tuning fork was
struck and placed slightly above the plastic
wrap, the salt began to move. Which
characteristic of waves does the movement
of the salt best demonstrate?
A
Echo formation
B
Diffraction
Acetone
C3H6O
Technical grade
500 mL
CAS 67-64-1
3
1
0
C* Resonance
D
Generic Chemicals
1717 Industrial Row
Anytown, USA 10059
• Highly volatile
• Flammable liquid and vapor
• Respiratory irritant
• Harmful if swallowed or inhaled
• May cause injury to eyes
• Effects may be delayed
Specular reflection
11EN05I05BZ04428
19
The label shown above contains information
about some harmful effects of acetone. A group
of students plans to use acetone to rinse out a
glass container. A second group of students is
working at the same lab table. Which of the
following lab procedures should the second
group of students avoid?
A* Heating water with an open flame
18
What is the net force exerted on a 90.0 kg
race-car driver while the race car is
accelerating from 0 to 44.7 m/s in 4.50 s?
F
9.8 N
G
20 N
H
201 N
B
Pouring hydrochloric acid into a beaker
C
Filtering precipitates from a liquid
solution
D
Collecting oxygen from plants in a test
tube
11EN01B01AZ04002
J* 894 N
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300
Momentum
(kgm/s)
250
200
150
100
50
0
0.5
1.0
1.5
2.0
2.5
3.0
Time
(s)
20
The graph shows how the momentum of a given mass changes during a period of motion. According to
the information, what is the momentum in kg m/s at 2.75 seconds? Record and bubble in your answer to
the nearest whole number on the answer document.
Correct answer: 200
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Power plants that discharge warm water into
rivers have a negative effect on aquatic life.
This is because the higher water
temperature —
A
increases the pressure of the river water
B
increases the pH value of the river water
C
decreases sediment solubility in the river
water
D* decreases the dissolved oxygen in the
river water
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Which configuration of pulleys and belts shown below will result in the fastest rotation of Spindle 2?
F
H*
Spindle 1
Spindle 2
G
Spindle 1
Spindle 2
Spindle 1
Spindle 2
J
Spindle 1
Spindle 2
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Liquid
Description
Density
(g/mL)
Boiling Point
(°C)
Q
Nonflammable colorless compound
1.62
59.5
R
Flammable colorless compound
0.71
34.6
S
Yellow mixture with strong odor
0.73
160.4
T
Viscous pale-yellow oil
0.93
300.0
The table shows properties of four liquids that are insoluble in water. If the four liquids are poured into
an Erlenmeyer flask containing water, which liquid will form a layer below the water?
A* Q
B
R
C
S
D
T
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Voltage
(V)
Voltage Required to
Maintain Constant Current
25
Which characteristic of water best explains its
ability to dissolve a great variety of materials?
125
A
Its transparency in light
100
B
Its electrical conductivity
C
Its physical state of matter
75
D* Its molecular arrangement
50
11EN04I09AZ04358
25
0
5
10
15
20
25
Length of Wire
(m)
24
The graph shows how the voltage needed to
maintain a constant current of 1.5 amps
through a wire conductor varies with the
length of the wire. If the trend continues,
what is the most likely voltage needed to
maintain a 1.5-amp current through
80 meters of the wire?
F
10 volts
G
18 volts
H
250 volts
J* 400 volts
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Corpus Christi
Fort Davis
Lipscomb
Latitude
27°48′N
30°35′N
36°14′N
Longitude
97°24′W
103°54′W
100°16′W
0 (sea level)
1494
728
20
25
22
100.0
95.0
97.6
Location
Elevation (m)
Sanitizing Time (min)
Boiling Point of Water (°C)
26
Boiling water can be used to sanitize dishes. The data above show how sanitizing time varies in
different locations. Which inference is supported by these data?
F
The boiling point of water is constant at higher altitudes.
G* The boiling point of water is affected by elevation.
H
Water takes longer to boil at Fort Davis than at sea level.
J
Boiling water changes temperature at a faster rate at Corpus Christi than at higher elevations.
11EN01B02DZ04044
27
A medical researcher hypothesizes that a
newly developed medication can reduce high
blood pressure. Which of these would most
likely be the dependent variable in a study
involving this medication?
A
The number of participants in the study
B
The ages of people treated for high blood
pressure with other medications
C* The blood pressure of the participants in
the study
D
The number of people treated for high
blood pressure with other medications
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Boyle’s law gives the relationship between the
pressure and volume of a gas if the temperature
and mass of the gas are held constant:
•
If the volume of the gas is increased, the
pressure of the gas decreases.
•
If the volume of the gas is decreased, the
pressure of the gas increases.
28
Temp. = 20°C
Pressure = 10 atm
Temp. = 20°C
Pressure = 2.5 atm
What can be concluded from the relationships described above?
F
Gas molecules travel longer distances at greater speeds when the volume of the gas is decreased.
G
A gas is more likely to lose kinetic energy when its volume is reduced.
H* Gas molecules collide less frequently when the volume of the gas is increased.
J
A gas is more likely to increase in momentum when its volume is increased.
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Which of these represents a properly balanced
system?
0.75 m
1.5 m
A
48 N
96 N
1.5 m 1.5 m
B
48 N
3.0 m
96 N
1.5 m
C*
48 N
4.5 m
96 N
1.5 m
D
48 N
96 N
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Variation in Leaf-Dropping Times
30
Plot
Gases Added to
Surrounding Air
Time
(days)
1
CO2
26
2
O3
3
3
CO2 + O3 mixture
10
4
None (control)
18
The table shows the time it took trees of the same type and size to drop all of their leaves after being
grown in different atmospheres. For the experiment to be valid, which of these must be a constant for
all the trees?
F
The height of all the trees during the entire experiment
G* The amount of water available to all trees during the experiment
H
The mass of fallen leaves collected from each tree
J
The rate of photosynthesis in all trees during the experiment
11EN01I03AZ04050
31
Sickle-cell anemia is a disorder resulting from
a mutation that leads to the production of an
abnormal protein. Which component of the
DNA molecule provides instructions for the
production of the protein?
A
The phosphate groups
B
The sugar molecules
C* The sequence of nitrogen bases
D
The bonds that hold the sugars to the
bases
11EN02B06CZ04149
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Before
After
48 kg
48 kg
32
40 kg
2.5 m/s
40 kg
3.0 m/s
Starting from rest at the center of a skating rink, two skaters push off from each other over a time
period of 1.2 s. What is the force of the push by the smaller skater?
F
16 N
G
32 N
H
88 N
J* 100 N
11EN05I04AZ03012
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Use the information below and your knowledge of science to answer questions 33–35.
Louis Pasteur’s Experiment
Like many other scientific breakthroughs, the discovery of immunization happened by accident.
In 1880 Louis Pasteur was trying to protect chickens from cholera. To study the disease, Pasteur and
his assistants gave injections of cholera bacteria to several groups of chickens. The chickens usually died
from cholera after being injected with the bacteria. However, one group of chickens survived. Pasteur
noticed that these chickens had been injected with a six-week-old batch of cholera bacteria.
Pasteur’s assistants prepared new colonies of cholera bacteria and injected these chickens a second
time. They also injected a group of chickens that had not been previously injected. Pasteur was surprised
that the chickens that had been injected previously with the old bacteria remained healthy, while all the
chickens in the second group became sick and died.
This is how Pasteur came to discover that exposure to weakened pathogens can provide immunity from
disease. The idea was later used to protect animals from other serious diseases. Today immunizations help
protect people from many illnesses.
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Which of these probably served as the
most useful data after Pasteur injected a
group of chickens with bacteria from the older
culture?
Cholera-causing bacteria belong to the
genus Vibrio. Some species of Vibrio cause
diseases in chickens and humans. However,
some species have mutualistic relationships
with fish and other marine life.
A* The health and behavior of the injected
chickens
B
The total number of cholera cases
observed
C
The changes in the shape and color of the
bacterial colonies
D
The recovery rate of chickens previously
infected with cholera
34
Which of these is the best example of a
mutualistic relationship in an aquatic
environment?
F
11EN01B02BZ04466-0403
Some fish can survive repeated infections
by harmful bacteria.
G* Some fish have bacteria living in their
digestive tract that help the fish digest
food.
H
Some bacteria are present in aquatic food
chains in which fish are secondary
consumers.
J
Some bacteria are aquatic decomposers
that recycle nutrients useful to fish.
11EN03B12BZ04507-0403
35
Cholera-causing bacteria have a single
flagellum that allows these bacteria to —
A* move
B
reproduce
C
excrete water
D
produce sugar
11EN02B04BZ04506-0403
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Group
A
B
C
D
E
F
G
H
I
36
Temperature
(°C)
0
10
20
30
40
60
80
90
100
Solubility
(g/100 mL)
28
31
34
37
40
45
51
54
56
Nine groups of students dissolved as much potassium chloride as possible in water. Each group used
100 mL of water heated to a different temperature. Which graph shows the relationship between
solubility and temperature for potassium chloride?
60
H
0
Solubility
(g/100 mL)
F
Solubility
(g/100 mL)
60
0
100
60
J*
100
0
Temperature
(°C)
Solubility
(g/100 mL)
60
Solubility
(g/100 mL)
G
100
Temperature
(°C)
Temperature
(°C)
0
100
Temperature
(°C)
11EN04I09DZ03425
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Which of these produces most of the
compounds responsible for causing acid
rain?
A
Effectiveness of
Horse Medication
100
Nuclear fission
Percentage of Horses That
Stopped Chewing on Wood
37
6/12/06
B* Fossil fuels
C
Solar cells
D
Windmills
11EN05I06DZ03512
90
80
70
60
50
40
30
20
10
0
1
2
3
4
5
6
7
8
9 10
Day Number
39
38
Which of these elements is most likely to
donate one electron?
Horses kept in stables sometimes chew on
wood. This can lead to damage to the mouth
and digestive system. The graph shows the
results of a study of a medication that
prevents horses from chewing on wood. From
the graph, what inference can be made about
the effectiveness of the product?
F
Be
A
Most horses like the medication.
G* Cs
B
The medication is most effective between
Days 4 and 5.
H
Rn
J
He
11EN04I07DZ03R37
C* Most horses will show improvement
within 7 days.
D
The effects of the medication are long
lasting.
11EN01I03BZ04067
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In all plant and animal cells, the nucleus
contains long molecules of DNA. Which of the
following best describes the function of DNA?
F
DNA provides the shape and structure of
the nucleus.
G
DNA packages materials for transport
through the nucleus.
H
DNA carries materials into and out of the
nucleus.
J* DNA contains the blueprint for producing
the whole organism.
11EN02B06AZ04104
41
The following hypothesis refers to iron in the
topsoil found on an island formed from
limestone.
Hypothesis: Much of the iron found in the
topsoil of the island was carried from Africa
by huge dust clouds.
Which study would most likely be used to
investigate this hypothesis?
A* Tracking dust clouds with satellite photos
B
Determining the effects of iron on
limestone
C
Calculating erosion rates in African
limestone mines
D
Analyzing the content of comet dust
clouds
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Alpha particles are one type of radioactivity.
These particles have a nucleus of two protons
and two neutrons but have no orbital
electrons. Based on this information, it can be
inferred that alpha particles are positive ions
of the element —
F
actinium
G
curium
H
radium
Eyepiece
Rotating
nosepiece
J* helium
11EN04I07DZ03164
Coarsefocus knob
Diaphragm
43
The picture above shows a compound
microscope. What part of the microscope
should be used to adjust the amount of light
illuminating a prepared slide?
A
Eyepiece
B
Rotating nosepiece
C* Diaphragm
D
Coarse-focus knob
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About 10,000 years ago two populations of
tassel-eared squirrels were separated from
each other. Today these squirrels are so
different that they are unable to interbreed
when brought together.
Tassel-eared squirrel
Northern
isolation
Southern
isolation
Kaibab squirrel
44
Abert’s squirrel
Which of the following explains this phenomenon?
F
Competition
G
Extinction
H
Predation
J* Speciation
11EN03B07BZ04229
45
Erwin Chargaff studied the DNA of organisms
within a single species. Chargaff discovered
that the amount of adenine is about equal to
the amount of thymine. Which of these
explains why the ratio of adenine to thymine
is nearly 1:1?
Electron Configuration
Energy level
1
Electrons
2 8 8
2 3
A* Adenine and thymine pair with each
other.
46
According to the periodic table and the
information above, which element has this
electron configuration?
B
Adenine binds with phosphates, while
thymine binds with nitrates.
C
Adenine and thymine are identical in
chemical composition.
F
Sodium
Adenine bases contain a form of thymine.
G
Neon
H
Magnesium
D
11EN02B06AZ04089
J* Argon
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Which of these does a virus need in order to
multiply?
A
Chloroplasts from a host cell
B
A host cell to provide oxygen for the virus
C
New ADP from a host cell
49
Which of these best explains why a freshwater
aquarium would be a dangerous habitat for
saltwater fish?
A
The tissues of the saltwater fish would
absorb too much acid.
B
The organs of the saltwater fish would
produce too much protein.
C
The organ systems of the saltwater fish
would consume too much energy.
D* A host cell to replicate the virus’s DNA
11EN03B04CZ02453
D* The cells of the saltwater fish would gain
too much water.
11EN02B04BZ04083
Trade winds blow from east to west across
the Pacific Ocean. The winds move surface
waters westward across the ocean. This
causes deeper, colder water to rise to the
surface along the coast. This upwelling of
deep ocean waters brings with it nutrients
that would otherwise lie near the bottom of
the ocean.
48
Which of the following conclusions is
supported by the information above?
F* Trade winds help maintain some food
chains.
G
Trade winds produce useful minerals in
some oceans.
H
Trade winds can reverse parts of the
water cycle.
J
Trade winds may be able to reduce
greenhouse gases.
11EN01B02DZ04048
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Which lever requires the least effort to lift the load?
Effor
t
F*
g
50 k
t
Effor
G
g
50 k
H
Effort
50 kg
J
50 kg
Effort
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53
Conclusion: Hearing aids are an effective way
to treat hearing loss.
A certain atom has a nucleus containing six
protons and eight neutrons and has six
electrons orbiting the nucleus. This atom is a
form of the element —
A
51
A study was conducted to test the
effectiveness of hearing aids. People with
different types of hearing loss were included
in the study. Which question would help in
determining whether the conclusion above is
valid?
A
What was the average age of the people in
the study?
B
What was the most common occupation of
people in the study?
silicon
B* carbon
C
magnesium
D
calcium
11EN04I07DZ03168
C* How many people were included in the
study?
D
How many people in the study had vision
problems?
11EN01B02DZ04041
52
When the air is released from a balloon, the
air moves in one direction, and the balloon
moves in another direction. Which statement
does this situation best illustrate?
F
What goes up must come down.
G* For every action there is an equal and
opposite reaction.
H
The shape and size of an object affect air
resistance.
J
The acceleration due to Earth’s gravity is
9.8 m/s 2.
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The myxoma virus was used to control an
overpopulation of European rabbits in
Australia. When first introduced in the mid1900s, the virus greatly reduced the European
rabbit population. Today the virus is not an
effective control of the European rabbit
population. Fewer European rabbits are
affected by the virus today because they
have —
F
learned to avoid the virus
G
moved away from infected areas
H
undergone a change in diet
J* developed resistance to the virus
11EN03B07BZ04237
55
Three liquids were poured into a beaker and
formed three layers. Which conclusion is best
supported by the information above?
A
The mass of Liquid 2 is greater than the
mass of Liquid 3.
B
The volume of Liquid 1 is less than the
volume of Liquid 3.
C* The density of Liquid 3 is greater than the
density of Liquid 2.
D
The buoyancy of Liquid 2 is greater than
the buoyancy of Liquid 1.
11EN01B02BZ02078
BE SURE YOU HAVE RECORDED ALL OF YOUR ANSWERS
Page 110
ON THE ANSWER DOCUMENT.
Texas Assessment of Knowledge and Skills - Answer Key
Grade: Exit Level
Subject: Science
Administration: April 2006
The letter B indicates that the
student expectation listed is from the
Biology I TEKS.
The letter I indicates that the
student expectation listed is from the
Integrated Physics and Chemistry TEKS.
Item
Number
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Correct
Answer
B
F
B
F
B
J
A
H
D
G
D
H
B
G
A
J
C
J
A
200
D
H
A
J
D
G
C
H
C
G
C
J
A
G
A
J
B
G
C
J
A
J
C
J
A
J
D
F
D
F
C
G
B
J
C
Objective
Measured
04
01
03
05
01
05
02
02
04
02
04
05
03
03
03
04
05
05
01
01
04
05
04
01
04
01
01
01
05
01
02
05
01
03
02
04
05
04
01
02
01
04
01
03
02
01
03
01
02
05
01
05
04
03
01
Student
Expectations
I.7 (A)
B.2 (C)
B.12 (E)
I.6 (D)
B.2 (A)
I.5 (B)
B.6 (C)
B.4 (B)
I.7 (D)
B.10 (B)
I.8 (A)
I.4 (A)
B.9 (D)
B.4 (C)
B.9 (D)
I.8 (C)
I.5 (B)
I.4 (A)
B.1 (A)
B.2 (C)
I.9 (D)
I.4 (D)
I.7 (A)
B.2 (C)
I.9 (A)
B.2 (D)
B.2 (A)
B.2 (D)
I.4 (D)
I.3 (A)
B.6 (C)
I.4 (A)
B.2 (B)
B.12 (B)
B.4 (B)
I.9 (D)
I.6 (D)
I.7 (D)
I.3 (B)
B.6 (A)
B.2 (A)
I.7 (D)
B.2 (A)
B.7 (B)
B.6 (A)
B.2 (C)
B.4 (C)
B.2 (D)
B.4 (B)
I.4 (D)
B.2 (D)
I.4 (B)
I.7 (D)
B.7 (B)
B.2 (B)
Copyright © 2006, Texas Education Agency. All rights reserved. Reproduction of all or portions of this work is
prohibited without express written permission from Texas Education Agency.
Exit Level Science
For a more complete description of the objectives measured, please refer to the Revised TAKS
Information Booklet for Exit Level Science at
http://www.tea.state.tx.us/student.assessment/taks/booklets/index.html.
Objective 1:
The student will demonstrate an understanding of the nature of science.
Biology (1) and Integrated Physics and Chemistry (1) Scientific Processes. The student, for at least
40% of instructional time, conducts field and laboratory investigations using safe, environmentally
appropriate, and ethical practices. The student is expected to
(A)
demonstrate safe practices during field and laboratory investigations.
Biology (2) and Integrated Physics and Chemistry (2) Scientific Processes. The student uses
scientific methods during field and laboratory investigations. The student is expected to
(A)
plan and implement investigative procedures including asking questions, formulating testable
hypotheses, and selecting equipment and technology;
(B)
collect data and make measurements with precision;
(C)
organize, analyze, evaluate, make inferences, and predict trends from data; and
(D)
communicate valid conclusions.
Integrated Physics and Chemistry (3) Scientific Processes. The student uses critical thinking and
scientific problem solving to make informed decisions. The student is expected to
(A)
analyze, review, [and critique] scientific explanations, including hypotheses and theories, as
to their strengths and weaknesses using scientific evidence and information; and
(B)
draw inferences based on data related to [promotional materials for] products and services.
Objective 2:
The student will demonstrate an understanding of the organization of living
systems.
Biology (4) Science Concepts. The student knows that cells are the basic structures of all living things
and have specialized parts that perform specific functions, and that viruses are different from cells
and have different properties and functions. The student is expected to
(B)
investigate and identify cellular processes including homeostasis, permeability, energy
production, transportation of molecules, disposal of wastes, function of cellular parts, and
synthesis of new molecules.
Biology (6) Science Concepts. The student knows the structures and functions of nucleic acids in the
mechanisms of genetics. The student is expected to
(A)
describe components of deoxyribonucleic acid (DNA), and illustrate how information for
specifying the traits of an organism is carried in the DNA;
(B)
explain replication, transcription, and translation using models of DNA and ribonucleic acid
(RNA); and
Page 1
Exit Level Science (continued)
(C)
identify and illustrate how changes in DNA cause mutations and evaluate the significance of
these changes.
Biology (8) Science Concepts. The student knows applications of taxonomy and can identify its
limitations. The student is expected to
(C)
identify characteristics of kingdoms including monerans, protists, fungi, plants, and
animals. **
**The TAKS will use the most current classification system.
Biology (10) Science Concepts. The student knows that, at all levels of nature, living systems are
found within other living systems, each with its own boundary and limits. The student is expected
to
(A)
interpret the functions of systems in organisms including circulatory, digestive, nervous,
endocrine, reproductive, integumentary, skeletal, respiratory, muscular, excretory, and
immune; and
(B)
compare the interrelationships of organ systems to each other and to the body as a whole.
Objective 3:
The student will demonstrate an understanding of the interdependence of
organisms and the environment.
Biology (4) Science Concepts. The student knows that cells are the basic structures of all living things
and have specialized parts that perform specific functions, and that viruses are different from cells
and have different properties and functions. The student is expected to
(C)
compare the structures and functions of viruses to cells and describe the role of viruses in
causing diseases and conditions such as acquired immune deficiency syndrome, common
colds, smallpox, influenza, and warts; and
(D)
identify and describe the role of bacteria in maintaining health such as in digestion and in
causing diseases such as in streptococcus infections and diphtheria.
Biology (7) Science Concepts. The student knows the theory of biological evolution. The student is
expected to
(A)
identify evidence of change in species using fossils, DNA sequences, anatomical similarities,
physiological similarities, and embryology; and
(B)
illustrate the results of natural selection in speciation, diversity, phylogeny, adaptation,
behavior, and extinction.
Biology (9) Science Concepts. The student knows metabolic processes and energy transfers that
occur in living organisms. The student is expected to
(D)
analyze the flow of matter and energy through different trophic levels and between
organisms and the physical environment.
Page 2
Exit Level Science (continued)
Biology (12) Science Concepts. The student knows that interdependence and interactions occur within
an ecosystem. The student is expected to
(B)
interpret interactions among organisms exhibiting predation, parasitism, commensalism, and
mutualism; and
(E)
investigate and explain the interactions in an ecosystem including food chains, food webs,
and food pyramids.
Biology (13) Science Concepts. The student knows the significance of plants in the environment. The
student is expected to
(A)
evaluate the significance of structural and physiological adaptations of plants to their
environments.
Objective 4:
The student will demonstrate an understanding of the structures and properties
of matter.
Integrated Physics and Chemistry (7) Science Concepts. The student knows relationships exist
between properties of matter and its components. The student is expected to
(A)
investigate and identify properties of fluids including density, viscosity, and buoyancy; and
(D)
relate the chemical behavior of an element including bonding, to its placement on the
periodic table.
Integrated Physics and Chemistry (8) Science Concepts. The student knows that changes in matter
affect everyday life. The student is expected to
(A)
distinguish between physical and chemical changes in matter such as oxidation, digestion,
changes in states, and stages in the rock cycle; and
(C)
investigate and identify the law of conservation of mass.
Integrated Physics and Chemistry (9) Science Concepts. The student knows how solution chemistry
is a part of everyday life. The student is expected to
(A)
relate the structure of water to its function [as the universal solvent];
(B)
relate the concentration of ions in a solution to physical and chemical properties such as pH,
electrolytic behavior, and reactivity; and
(D)
demonstrate how various factors influence solubility including temperature, pressure, and
nature of the solute and solvent.
Objective 5:
The student will demonstrate an understanding of motion, forces, and energy.
Integrated Physics and Chemistry (4) Science Concepts. The student knows concepts of force and
motion evident in everyday life. The student is expected to
(A)
calculate speed, momentum, acceleration, work, and power in systems such as in the
human body, moving toys, and machines;
Page 3
Exit Level Science (continued)
(B)
investigate and describe applications of Newton's laws such as in vehicle restraints, sports
activities, geological processes, and satellite orbits; and
(D)
investigate and demonstrate [mechanical advantage and] efficiency of various machines
such as levers, motors, wheels and axles, pulleys, and ramps.
Integrated Physics and Chemistry (5) Science Concepts. The student knows the effects of waves on
everyday life. The student is expected to
(B)
demonstrate wave interactions including interference, polarization, reflection, refraction, and
resonance within various materials.
Integrated Physics and Chemistry (6) Science Concepts. The student knows the impact of energy
transformations in everyday life. The student is expected to
(A)
describe the law of conservation of energy;
(B)
investigate and demonstrate the movement of heat through solids, liquids, and gases by
convection, conduction, and radiation; and
(D)
investigate and compare economic and environmental impacts of using various energy
sources such as rechargeable or disposable batteries and solar cells.
Page 4