Q. No.Active Transport
Which of the following is wrong?
1. Uses energy to transport
2. Uses energy to pump molecules against a concentration gradient
3. Carried out by specific membrane proteins
4. Substances are transported from a high concentration to low concentration
Membrane proteins are for
1. Uphill transport
2. Downhill transport
3. Uphill as well as downhill transport only
4. For Facilitated Diffusion only
Which of the following is not a common characteristic between Active transport and Facilitated Transport?
1. Use of ATP
2. Highly selective
3. Liable to saturate
4. Under Hormonal Regulation
What may be regarded as a valid difference between active and passive absorption of water?
1. Passive absorption is affected by the presence of metabolic inhibitors
2. active absorption is accelerated by the presence of auxins
3. Passive absorption is dependent on development of root pressure
4. Active absorption is dependent on aerial parts of plants for the development of a pull force.
Which of the following is not a feature of the active transport of solutes in plants?
1. Occurs against the concentration gradient
2. Non-selective
3. Occurs through membranes
4. Requires ATP
I. is the only means of uphill transport
II. requires ATP energy
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false
| 1. | Unlike facilitated transport, simple diffusion requires special membrane proteins |
| 2. | Both simple diffusion and facilitated transport are highly selective |
| 3. | Facilitated transport is an uphill transport and requires ATP energy |
| 4. | Both facilitated transport and active transport are liable to saturate |
1. diffusion of solute through the lipid bilayer of a membrane.
2. pumping of solutes across the membrane.
3. hydrolysis of ATP.
4. transport of solute against a concentration gradient.
1. Active transport
2. Facilitated diffusion
3. Osmosis
4. Passive transport
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