Question

Select all that is correct
Active transport requires ATP and moves down the concentration gradient.
• b Passive transport includes osmosis and diffusion.
• c Cellular transport is the exchange of molecules across the cell membrane.
• d Osmosis is the movement of water fromn a solution with high concentration of water to a solution with lower concentration of water.

Answers

GPT-4o mini
Let's evaluate each statement to determine which ones are correct:

- **a**: "Active transport requires ATP and moves down the concentration gradient."
- This statement is **incorrect**. Active transport requires ATP but moves against the concentration gradient (from low to high concentration), not down the gradient.

- **b**: "Passive transport includes osmosis and diffusion."
- This statement is **correct**. Passive transport does include both osmosis (the movement of water) and diffusion (the movement of solutes) and occurs without the use of energy.

- **c**: "Cellular transport is the exchange of molecules across the cell membrane."
- This statement is **correct**. Cellular transport refers to the processes that involve the movement and exchange of molecules across the cell membrane.

- **d**: "Osmosis is the movement of water from a solution with high concentration of water to a solution with lower concentration of water."
- This statement is **correct**, although it could be more precisely stated. Osmosis is the movement of water from a hypotonic solution (high concentration of water, low concentration of solutes) to a hypertonic solution (low concentration of water, high concentration of solutes).

So, the correct statements are:
- **b**
- **c**
- **d**