Question

Which of the following processes requires energy in the form of ATP?

• A. Osmosis
• B. Diffusion
• C. Active transport
• D. All of the these.

Answer 1

The correct option is C

Active transport

The correct option is c

Explanation of the correct option:

1. Active transport is movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and energy.
2. ATP required for this process.

Explanation of the incorrect option:

Option a:

1. Osmosis is the process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

Option b:

1. Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration.
2. No ATP is required in this process.

Final answer: Active transport requires energy in the form of ATP.