Active Transport

Q.

Cell membrane spends energy in:

1. Movement of solute from higher to lower concentration

2. Movement of solute from lower to higher concentration

3. Movement of solvent

4. All of these

Q. Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.

1. True
2. False

Q. The sodium- potassium requires energy to move sodium and potassium ions across the cell membrane. Which of these describes the process used by the sodium-potassium pump?

1. Active transport
2. Photosynthesis
3. Diffusion
4. Osmosis

Q. The sodium- potassium requires energy to move sodium and potassium ions across the cell membrane. Which of these describes the process used by the sodium-potassium pump?

1. Osmosis
2. Photosynthesis
3. Diffusion
4. Active transport

Q.

Cell membrane spends energy in:

1. Movement of solute from higher to lower concentration.

2. Movement of solute from lower to higher concentration.

3. Movement of solvent.

4. All of these

Q. Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration.

1. True
2. False

Q. Active transport is characterized by

1. the requirement of special proteins
2. the expenditure of ATP
3. being highly selective of the molecules transported
4. all of the above

Q. Active transport of the plasma membrane involves the movement of molecules

1. along the concentration gradient
2. against the concentration gradient
3. both along and against the concentration gradient
4. neither along nor against the concentration gradient

Q. Active transport of the plasma membrane involves the movement of molecules

1. along the concentration gradient
2. against the concentration gradient
3. both along and against the concentration gradient
4. neither along nor against the concentration gradient

Q. Active transport?