Video: The Incredible World Of the Microscope

Video: The Incredible World Of the
Microscope
Link to
video
JQ: Look at the plant cells below
What do the cells remind you of?
What can the shape of the plant cells
tell you about their function. Explain.
Elodea plant Cells 400x
Check cells under high power
Tissues = group of similar
cells working together.
Lines and protects
body surfaces.
Example: Skin &
Lining of Organs
Connects,
supports and
insulates body.
Example: Blood,
fat, bone.
Adipose Tissue
Contracts &
relaxes to produce
movement.
Example: walls of
intestines, heart
Carries info. to
all parts of the
body.
Example: neurons
Skeletal Muscle
Multipolar Neuron
Smear
Paramecium
Amoeba
Stentor
Volvox
Euglena
Each picture has a link to
a video
JQ: What does it
mean to be
independent? Are
you independent?
Explain.
Humans are made up
of trillion's of cells
that have special
jobs in order to work
together. This way
they have a better
chance of surviving.
JQ: What makes
an Avatar’s skin
blue? Explain.
What is a cell?
The basic unit of
structure and function
for all living things!
What is a theory?
A theory is a well tested
hypothesis that has not
been proven incorrect to
date.
What is cell theory?
1. All living things are made
from one or more cells.
Theodore Schwann
2. Cells are the basic unit of
structure and function in
living things. (Smallest
form of life!)
3. New cells come from
existing cells.
Matthias Schleiden
What types of
cells exist?
1. Prokaryotic Cell –
cells that lack a
membrane bound
nucleus.
Example: Bacteria
and archaea
2. Eukaryotic Cell – a
cell that contains a
membrane bound
nucleus & many
specialized
structures called
organelles. (plants
animals, fungi, protists.)
What are organelles?
“Tiny organs” - specialized
structures found within a
cell.
Types of
Eukaryotic cells
Single Celled – 1 cell
(ex. Ameoba,
Paramecium)
Multicellular –many
specialized cells working
together (plants and
animals)
Plant Cell
Animal Cell
*You need your textbook today*
JQ: Would you
rather have the
ability to shrink
to the size of a
pin head or grow
to the size of an
oak tree?
Explain.
Class Review –Post Lab Questions
Elodea – Magnified at 1000x
Magic School Bus
Goes Cellular!
Journal Question: Scientists claim that chloroplasts and
mitochondria, in plant and animal cells, were once (long
time ago) separate bacterial cells that got engulfed by
larger cells. How do the following facts provide support
for this idea? Explain each.
A. Unlike other organelles, chloroplasts
and mitochondria are covered in two
layers of membrane, not one.
B. Chloroplasts and Mitochondria have
their own DNA, separate from the
DNA in the nucleus of the cell they
are in
C. Chloroplasts and Mitochondria
reproduce on their own within cells,
at different times than the cell
itself divides
Theory of Endosymbiosis:
A. Explains how membrane-bound organelles came to be in
eukaryotes – through infolding of plasma membrane
B. Explains the journal question: Both chloroplasts and
mitochondria were once separate, prokaryotic cells, until
they were taken in by larger cell and became organelles
C. Why would this be selected for by natural selection?
Journal Question: Choose a simple task,
(like making a sandwich, tying your shoes,
sending a text, etc.) and write a step-wise
procedure for the task.
Does your procedure pass
the following tests:
You might need
your text book!
A. Is it written is simple,
short steps?
B. Is it written descriptively
and clearly?
C. Could a 12-year old could
perform the task exactly
just by reading through
your procedure?
Magic School Bus
Goes Cellular!
Function
Which organ or system is the
Do Now: Check your answers to the Cells Are Like worksheet below.
Cell Part/Organelle
organelle like? Explain why.
Brain / nervous system
1. Nucleus
DNA found inside, controls the
activities of the cell
1. Cell Membrane
“selectively permeable”: regulates
what goes in and out of cell
1. Cell Wall
Rigid outer layer of plant/some
bacterial/fungal cells, for support
1. Ribosome
Tiny “protein factory” within the cell - Challenging  muscle?
> proteins do most of cells work
1. Mitochondria
Powerhouse: turns food molecules into
usable energy
1. Chloroplast
Contains green chlorophyll; captures
light energy, CO2 and H2O to do
photosynthesis
1. Vacuole
1. Lysosome
Skin / integumentary system
Bones / skeletal system
Stomach / digestive system
Why can’t chloroplasts be
compared to any
organ/system?
Storage units – Large and central in
Challenging  liver or fat cells
plants, smaller in animal cells
or gall bladder maybe
Little bags of digestive chemicals that Lymphatic/immune system
kill invaders and recycle
dead/damaged cell parts.
Magic School Bus
GoesCell Cellular!
Types
Do Now: Check your answers to the Cells Are Like worksheet below.
Eukaryotes
(Complex)
Prokaryotes
DNA, Cell
membrane,
ribosomes
Animal
protist
Bacteria
Fungi
Plant
Nucleus
Simple
Archaea
Journal Question:
Remember the
Journal Question
about changing your
perspective?
Describe at least three
ways in which your
perspective has been
changed by the unit
on tissues, cells,
organelles
Today’s Agenda:
1. Write your procedure for DYOE
2. Work on Review Sheet
(Quest on Cells, Microscopes, Tissues, Organelles
Next Time)
Take a few minutes to
review for your test
Tissue practice quiz
You are what you eat…literally
Your cells are made of four main
types of large molecules:
Carbohydrates, Lipids, Proteins,
and Nucleic Acids. They can only
do their job if they have the
right amount of each of these.
Go to macromolecules PPT
Lung Tissue
Internal Stomach
Lining Tissue
Cross Section
Small Intestines
Internal Lining of
Gallbladder
Cilia of the Trachea
The Magic School Bus
Goes Cellular
1.
Pre-read video
questions.
2.
Watch movie and
answer video
questions.
3.
Class discussion
regarding video
questions.
Sticky Cells Activity
1.
Pre-read sticky cells
lab.
2.
Perform sticky cells
activity and record
observations.
3.
Get assigned
microscope, prep sticky
cells, view, draw & label.
4.
Answer post lab
questions and discuss
with class.
Human Cheek Cell
JQ: Were the military forces on
Pandora good or bad? Explain.
Sticky Cells Activity
Part 2 – Plant
Comparison
1.
Obtain a piece of
Elodea.
2.
Get assigned
microscope, prep
elodea, view, draw &
label.
3.
Answer post lab
questions and discuss
with class.
What else is
around us
that we can
not see?
JQ: What does it
mean to be bad?
Explain.
“Several Species of Small
Fury Creatures in a Cave
Grooving” Activity
1. Retrieve your bacteria
samples.
2. Make observations in
journal booklets.
3. Bring bacteria cultures up
front and place on red tray
for disposal.
4. Wash your hands and dry
them off. Return to seat.
Growth of Bacteria Over 24 Hours
Growth Rate
1. What should
the label on the
X-axis be?
2. What should
the label on the
Y-axis be?
0
3. What should
the curve of the
graph look like?
0
0
6
12
18
Time (hrs)
24
Bacterial Growth as Temperature Increases
1. What should
the title of
this graph
be?
Population (thousands)
16
2. What should
the curve of
the graph
look like?
12
0
8
4
0
20
40
60
80
Temperature (F)
100
3. Why does
the graph
plummet?
Growth of Bacteria Small & Large Petri Dishes
Population
1. Explain the
curves of
this graph
0
0
0
6
12
18
24
JQ: When scientists first
attempted to make an avatar
they were unsuccessful.
After further inspection
they realized that a virus
snuck past its immune system
and into its cells. Once in the
cell it took over and
destroyed the cells.
Scientists think that the
avatar’s cells were missing an
organelle. Which organelle
was most likely missing from
the avatar’s cells?
An Inside Look
at Organelles!
Plant Cell
A. _____________________________
B. ____________________________
C. _____________________________
D. _____________________________
E. _____________________________
F. _____________________________
G. _____________________________
H. _____________________________
I. ____________________________
J. _____________________________
K. _____________________________
L. _____________________________
M. _____________________________
N. _____________________________
Animal Cell
A. _______________
B. ______________
C. _______________
D. _______________
E. _______________
F. _______________
G. _______________
NO Journal Question Today!
Take some time to review for
your test! You will need a pencil.
JQ: What could he grow up to
be? Explain.
Start as one cell
with unlimited
potential!
End with trillions of
specialized cells each cell
being limited potential!
Stem Cells:
Cells that haven’t
turned into a
specific cell type
yet (they’re
undifferentiated)
Differentiation:
Process that turns
an unspecialized cell
into a cell with a
specific job.
What are stem
cells?
What does it mean
to differentiate?
What are the
different types of
stem cells?
What is the goal of
stem cell research?
What are the issues?
2. Stem Cell
Debate Video
You’ve learn about how
organisms interact on this
planet, and the damage that
humans are causing to the
balance of life. We’ve even
discussed some solutions to the
problem.
You’ve also learned about how
organisms are put together,
from cells to organ systems.
Would you choose to be
cryogenically preserved if the
technology was available? Explain.
JQ: If you are going
to build an Avatar you
will need to gather
some DNA from a
Na’vi and a human.
Getting the DNA from
a human is easy, but
how would you go
about getting it from a
Na’vi? Explain.
Where do we
find DNA?
With something so small
how is it possible to pull it
out and look at it?
Extraction
Lab
Practicing your
extraction technique
How come you don’t
start to become a
strawberry when you
eat strawberry DNA?
“Avatar Armor” Lab
1. Pre-read lab
2. Get lab coats and
equipment.
3. Measure out material
and make armor.
4. Play with armor, record
observations & answer
questions.
5. Clean-up and return to
seats.