Cell Transport Quiz
1. Water-loving molecules such as glucose are:
A
hydrophobic
B
hydrophilic
C
insoluble in water
2. The model of a cell membrane containing a bilayer of phospholipid molecules with interspersed protein molecules is the:
A
induced fit model
B
fluid mosaic model
C
lock and key model
3. The cell membrane is differentially permeable. This means that:
A
some molecules may pass through but not others
B
all molecules pass through the membrane at the same rate
C
only glucose passes through easily
4. The transport of mineral ions from soil to plant root requires energy-rich ATP. This is an example of:
A
passive transport
B
active transport
C
osmosis
5. Diffusion is the movement of substances from:
A
low to high concentrations
B
high to low concentrations
C
equal areas
6. The diffusion of water is called:
A
osmosis
B
hydrophobic
C
concentration gradient
7. When a microscopic protozoan takes in a particle of food into itself, the process used is:
A
exocytosis
B
endocytosis
C
osmosis
8. When milk is secreted by mammary glands, the process used is:
A
exocytosis
B
endocytosis
C
osmosis
9. White blood cells engulfing foreign bacteria is an example of:
A
phagocytosis
B
exocytosis
C
diffusion
10. The difference between the membrane surrounding a cell and an organelle is that the cell membrane is:
A
more porous
B
thicker
C
thinner
11. In saltwater, the solvent is the:
A
various salts
B
sodium chloride only
C
water
12. What is the difference between passive and active transport?
A
Passive transport releases energy, but active transport does not
B
Passive transport requires an output of energy
C
Active transport requires an input of energy, but passive transport does not
13. Osmosis is:
A
the movement of water from low to high concentrations
B
the movement of solvent from low to high concentrations
C
the diffusion of water
14. How do amino acids move across the cell membrane?
A
They move by osmosis from the inside to the outside of the cell.
B
They are water-soluble, require energy, and pass through the channels made by protein molecules.
C
They are lipid-soluble and move by diffusion.
15. Approximately what percentage of water makes up cytoplasm?
A
25-30%
B
30-70%
C
70-95%
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