Biology

Question

5. In the diagram of a single-celled organism shown

below, the arrows indicate various activities taking

place.

Food

Nitrogenous wastes

A

F

(

T

9. C

A

(

г

10.

0,

COz

Which systems perform these same activities in

humans?

A) digestive, circulatory, and immune

B) excretory, respiratory, and reproductive

C) respiratory, excretory, and digestive

D) respiratory, nervous, and endocrine

11.

Answer

C) respiratory, excretory, and digestive.

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In humans, the respiratory system is responsible for taking in oxygen and releasing carbon dioxide, which is similar to the function of the arrows labeled "O...