a0101_biological

Question 1 of 4

Which of the following cellular functions require ATP?

generation of heat

synthesis of macromolecules

cell motility

transport of molecules against their concentration gradient

All of the above require ATP.

Correct.

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Which of the following processes generate ATP?

photosynthesis and respiration

cell motility

generation of heat

transport of molecules against their concentration gradient

All of the above processes generate ATP.

Correct.

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The Na⁺/K⁺ ATPase:

is a nuclear ion channel.

pumps Na⁺ into the cell.

does not require ATP.

pumps Na⁺ and K⁺ against their concentration gradients.

pumps K⁺ out of the cell.

Correct.

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The Na⁺/K⁺ ATPase pumps:

3 Na⁺ ions out of the cell for every 3 K⁺ ions that enter (coupled with the hydrolysis of two molecules of ATP).

2 Na⁺ ions out of the cell for every 3 K⁺ ions that enter (coupled with the hydrolysis of one molecule of ATP).

3 v ions out of the cell for every 3 K+ ions that enter (coupled with the hydrolysis of three molecules of ATP).

3 Na⁺ ions out of the cell for every 2 K⁺ ions that enter (coupled with the hydrolysis of one molecule of ATP).

2 Na⁺ ions out of the cell for every 2 K⁺ ions that enter (coupled with the hydrolysis of three molecules of ATP).

Correct.

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Incorrect.

Chapter 1. Biological Energy Interconversions