Unit 4 Target 5: Cell Membrane Transport Quiz
- 1.Which of the following does NOT expend energy?
- A.
Active transport
- B.
A sodium-potassium pump
- C.
Diffusion
- D.
Endocytosis
- 2.Which means of particle transport requires input of energy from cell?
- A.
Osmosis
- B.
Diffusion
- C.
Facilitated diffusion
- D.
Active transport
- 3.By what process does a sodium ion exit a cell through plasma membrane?
- A.
Facilitated diffusion
- B.
Osmosis
- C.
Active transport
- D.
Exocytosis
- 4.Which of the following is NOT a characteristic of facilitated diffusion?
- A.
It involves a change in the shape of its carrier.
- B.
It moves substances against a concentration gradient.
- C.
It requires no energy input.
- D.
It requires a carrier protein.
- 5.The sodium-potassium pump usually pumps
- A.
Sodium into the cell.
- B.
Potassium into the cell.
- C.
Potassium out of the cell.
- D.
Both A and C.
- 6.Sugar molecules can enter cells through the process of
- A.
Ion pumps.
- B.
Facilitated diffusion.
- C.
Osmosis.
- D.
Exocytosis.
- 7.Molecules that are too large to be moved through the membrane can be transported INTO the cell by
- A.
Diffusion.
- B.
Endocytosis.
- C.
Exocytosis.
- D.
Lipid carriers.
- 8.When a cell produces a protein to be used in a different part of the body, through which type of transport does it LEAVE the cell?
- A.
Osmosis
- B.
Facilitated diffusion
- C.
Endocytosis
- D.
Exocytosis
- 9.Diffusion takes place
- A.
Only through a lipid bilayer membrane.
- B.
From an area of low concentration to an area of high concentration.
- C.
Only in liquids.
- D.
From an area of high concentration to an area of low concentration.
- 10.
The diagram shows a cell membrane composed of a phospholipid bilayer with a channel protein. Each x represents the same type of molecule inside or outside the cell. Facilitated diffusion moves these molecules across the cell membrane.In what direction do these molecules move and through which structure?- A.
Into the cell through the channel protein
- B.
Into the cell through the phospholipid
- C.
Out of the cell through the channel protein
- D.
Out of the cell through the phospholipid bilayer
- 11.
Refer to the illustration above. The process shown is called
- A.
Osmosis.
- B.
Facilitated diffusion.
- C.
Active transport .
- D.
Diffusion.
- 12.The diffusion of water across a selectively permeable membrane is called
- A.
Osmosis.
- B.
Osmotic pressure.
- C.
Facilitated diffusion.
- D.
Active transport.
- 13.As a result of diffusion, the concentration of many types of substances
- A.
Always remains greater inside a membrane.
- B.
Eventually becomes balanced on both sides of a membrane.
- C.
Always remains greater on the outside of a membrane.
- D.
Becomes imbalanced on both sides of a membrane.
- 14.The cytoplasm of red blood cells has a higher concentration of Na+ than does pure water. Suppose a biologist places a red blood cell in pure water. Is there a net flow of water molecules into or out of the red blood cell, and by which process does this net flow of water occur?
- A.
Out of the cell; osmosis
- B.
Into the cell; osmosis
- C.
Out of the cell; active transport
- D.
Into the cell; active transport
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