Passive Transport

Q.

Why does a cell become turgid?

Q.

Does facilitated diffusion require ATP?

Q.

Which method of transport in the plasma membrane does not require a carrier molecule?

1. Facilitated diffusion

2. Active transport

3. Simple diffusion

4. Na⁺-K⁺ pump

Q. Passive transport of molecules across the cell membrane is by

1. diffusion only
2. osmosis only
3. both diffusion and osmosis
4. neither diffusion nor osmosis

Q. The transport of molecules across the cell membrane without the expenditure of energy is an example of

1. active transport
2. absorption
3. passive transport
4. secretion

Q.

Does facilitated transport require ATP energy?

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. All of these

4. Movement of solvent

Q.

TRANSPIRATION PULL THEORY

Q. Consider the following statements with reference to facilitated diffusion:
(a) Requires ATP energy
(b) Transport saturates
(c) Highly selective
(d) Requires special membrane protein
(e) Uphill transport
Out of the above statements:

1. a, b and c are relevant but d and e are irrelevant
2. b, c and e are relevant but a and d are irrelevant
3. c, d and e are relevant but a and b are irrelevant
4. b, c and d are relevant but a and e are irrelevant