Notetaker 3.1

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Notetaker 3.1
Chapter 3 – Cells
3.1 – Plasma Membrane
The Plasma Membrane
 Cell: ________________________________________________________________________________________
 Plasma Membrane: same as the _____________________ ______________________________________
o ___________________________ between the _________________________ and the
________________________ of the cell
o crucial in _________________________________ the cell’s ________________________________
o composed of ____________________________________ and proteins
Structure of the Plasma Membrane
 Plasma membrane is a _____________________________
__________________________
o phospholipid = ______________
o bilayer = _____--___________________
 Phospholipids contain a head and a tail
o heads: are ________________________________ (water
loving) and are _____________________ to
___________________________ inside and outside the cell
o Tails: are ___________________________________ (water hating), __________________ point to the
___________________ of the plasma membrane
 Plasma membrane is ______________________________ ____________________________
 Chooses what is _________________________ _________ and __________________ of the ________________
 Plasma membrane has proteins embedded into it which can carry materials in and out of the cell
Transport Across the Plasma Membrane
 Substances move through the _____________________ ____________________________ via
____________________ ________________________ or _____________________ _______________________
 Passive Transport
o Substances move _________________ a
__________________________
___________________________ WITHOUT
_______________________________
o Diffusion: __________________________
move from an area of ________________
________________________________ to an
area of _____________
____________________________
o Osmosis: passive process where _____________________ moves through the selectively
__________________________
______________________________
 Water moves from an area of __________________
___________________ concentration to an area of
______________ _______________________
concentration
 (or from an area of low solute
concentration to an area of high solute
concentration)
 cell volume remains _______________________ in
a ______________________ ____________





cells ________________ _____________________ because of water
________________ due to osmosis
 cells________________ ______________________ because of water _______________
due to osmosis
 putting cells in certain _______________________ however can ____________________
_________________ ______________________
 ________________________ solutions:
_____________________________________________
_____________________________________________
_____________________________________________
_____________________________________________
o Cell maintains its _____________________ shape
 ________________________ solutions:
__________________________________________
__________________________________________
__________________________________________
__________________________________________
o Water ________________ the cell faster than
it leaves
o Cell ________________ and ____________________
 ________________________ solutions:
____________________________________________
____________________________________________
____________________________________________
____________________________________________
o Water ____________________ the cell faster
than it enters
o Cell _____________________
Active Transport
o __________________________ move across the plasma membrane, _________________ a
_________________________
__________________________
 area of ____________ concentration _______
_______ area of _______________ concentration
(opposite of passive transport)
o Requires _____________________ in the form of
________________
o Substances that ______________ across the membrane by
________________ ___________________ are mostly
____________
 Na+, K+, H+, Ca2+, I-, Cl3.2 – Cytoplasm
Cytoplasm: contains all of the _____________________ ____________________ of the _________________,
including ____________________ and the ___________________
Cytosol: _________________ portion of the ___________________
o surrounds the organelles
o usually 75-90% water
Organelles: ________________________ cell structures with specific ____________________ and specific
___________________________
o
o
o
o
o
o
Cytoskeleton: composed of protein filaments
 Maintains ____________________ and organization
of cellular _______________________
 Responsible for __________________ movements
Ribosomes: sites of _____________________
________________________
 Found _________________________
___________________ in the cytosol or
____________________ to the
_________________________________ ___________________________________
Endoplasmic Reticulum(ER): network of folded membranes
 Rough ER: ____________________ with
______________________________, attached to
the nuclear membrane
 synthesizes ______________________
___________________ and
____________________________
 Smooth ER: _________________
____________________________, extends from the
rough ER
 synthesizes _______________
_______________ and
___________________ (estrogen,
testosterone)
 releases _________________________ into
the bloodstream
 stores _________________________ (Ca2+) ions for muscle contraction
Golgi Complex(Apparatus): flat membranous sacs, piled on top of one another
 Accepts ___________________ from the ___________________ ________
 ___________________, ______________________ and exports _____________________
Lysosomes: vesicle formed from Golgi complex
 Contains _________________________ ____________________
 ____________________ worn-out _______________________ and extracellular materials
Mitochondria: “___________________________________” of the
cell
 Site of ____________ production
 Consist of 2 membranes
 Smooth __________________
______________________
 _________________ _______________________
which is arranged in folds called
___________________
o ______________________: fluid filled
cavity in-between the inner membrane and the cristae
Left Blank on Purpose
Name: ______________________________
Period: _______________
Chapter 3: Cells
Check for understandings must be turned in at the end of the PowerPoint in order to receive credit
Biological Molecules Video: In Da Club
Answer the following questions for credit and these questions will be seen again on your exam
1. What are the 2 ways which materials move in and out of the cell? ______________________________________
___________________________________________________________________________________________
2. Which requires no energy and allows things like oxygen and water into the cell? __________________________
3. What is diffusion and give an example? ___________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
4. When water moves from high to low concentration it has a specific name. _______________________________
5. Define hypertonic: ____________________________________________________________________________
___________________________________________________________________________________________
6. Define hypotonic: _____________________________________________________________________________
___________________________________________________________________________________________
7. Define Isotonic: ______________________________________________________________________________
___________________________________________________________________________________________
8. Why is it important that our cells remain isotonic: ___________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
Check for Understanding 1
1. _______________________________________
2. _______________________________________
3. ______________________________________________
4. ________________________________________
5. ________________________________________
6. ___________________________________________________________________________________________
___________________________________________________________________________________________
7. _____________________________________________
Check for Understanding 2
1. _______________________________________
2. _______________________________________
3. _______________________________________
4. _______________________________________
5. _______________________________________
6. _______________________________________
7. _______________________________________
8. _______________________________________
9. _______________________________________
10. _______________________________________

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