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Cell Membrane
Test Description: Cell Membrane
Instructions: Answer all questions to get your test result.
1) Phospholipids are an example of which macromolecule?
A
lipids
B
proteins
C
carbohydrates
D
nucleic acids
2) ______________________ is responsible for helping the cell membrane to act like a fluid
A
cholesterol
B
hydrophobic heads
C
cell membrane
D
proteins
3) The cell membrane helps to maintain ____________ by regulating what enters and leaves the cell
A
homeostasis
B
protection
C
fluidity
D
structure
4) What are some terms that describe the phospholipids head?
A
polar and tail
B
non polar and hydrophobic
C
polar and hydrophilic
D
head and hydrophobic
5) Which term does not describe the tails of a phospholipid?
A
polar
B
hydrophobic
C
protein
D
hydrophilic
6) What do proteins do for the cell membrane?
A
Communicate to other cells, used as identification, transport substances
B
Provides protection for the cell
C
Transport large molecules that cannot go through the cell membrane.
D
Provide structure
7) Which is a true statement about the phospholipid bilayer?
A
Hydrophobic heads only face the outside of the cell
B
Hydrophilic heads face the inside and outside of the cell
C
Hydrophobic tails face the inside and outside of the cell
D
Hydrophilic tails face each other
8) Which is not another name for the structure that regulates what enters and leaves the cell?
A
cell membrane
B
phospholipids
C
fluid mosaic model
D
plasma membrane
9) Hydrophobic means
A
tail
B
non polar
C
water fearing
D
water loving
10) What would happen if cholesterol in the cell membrane stopped working properly?
A
The cell membrane will be more fluid like and break apart.
B
The cell membrane will only allow substances to enter the cell. Substances will not be able to leave.
C
The cell membrane will become solid and not allow substances through.
D
The cell membrane will continue to allow materials into and out of the cell.
*select an answer for all questions
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