Question

Which statement concerning osmosis and active transport is correct?
Responses
A Both endocytosis and active transport require cell energy.Both endocytosis and active transport require cell energy.
B Active transport requires cell energy while osmosis does not.Active transport requires cell energy while osmosis does not.
C Neither faciliated diffusion nor osmosis requires cell energy.Neither faciliated diffusion nor osmosis requires cell energy.
D Diffusion of gases and other small molecules requires no energy on part of the cell.

Answer 1

The correct statement is:

**B** Active transport requires cell energy while osmosis does not.

Here's a quick explanation of the terms involved:

- **Active transport** is a process that moves molecules against their concentration gradient and requires energy (usually in the form of ATP).
- **Osmosis** is a type of passive transport that refers specifically to the movement of water across a selectively permeable membrane and does not require energy.
- **Facilitated diffusion** is also a passive process that does not require energy.
- **Diffusion** of gases and small molecules occurs naturally from areas of higher concentration to areas of lower concentration and does not require energy either.

Thus, option B accurately reflects the distinction between active transport and osmosis.