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RELEASED

A sugar, a phosphate group, and a nitrogen base form the building blocks of which organic compound?

A

carbohydrates

B

lipids

C

nucleic acids

D

proteins

What will most likely happen if an appropriate enzyme is added to a chemical reaction?

A

The reaction rate will increase.

B

The equilibrium of the reaction will be maintained.

C

The reaction rate will decrease.

D

The reaction will stop.

In which way are photosynthesis and cellular respiration different?

A

Cellular respiration stores ATP, while photosynthesis releases ATP.

B

Cellular respiration produces oxygen, while photosynthesis uses oxygen.

C

Photosynthesis releases energy, while cellular respiration stores energy.

D

Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.

North Carolina Test of Biology. Form I RELEASED Fall 2009

42.

45.

Which is the most likely function of a group of cells that contains a high number of chloroplasts?

A

respiration

B

transpiration

C

fermentation

D

photosynthesis

In humans, glucose is kept in balance in the bloodstream by insulin. Which concept does this best illustrate?

A

adaptation

B

homeostasis

C

metabolism

D

organization

43.

NCDPI

41.

44.

Page 21

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