Unit 5 Test Review

What are the three parts of an ATP molecule?

• adenine, thylakoid, and a phosphate group

• stroma, grana, and chlorophyll

• adenine, ribose, and three phosphate groups

• NADH, NADPH, and FADH₂

Energy is released from ATP when

• a phosphate group is added.

• adenine bonds to ribose.

• ATP is exposed to sunlight.

• a phosphate group is removed.

Look at Figure 8–1. All of the following are parts of an ADP molecule EXCEPT

• structure A.

• structure B.

• structure C.

• structure D.

Which structures shown in Figure 8–1 make up an ATP molecule?

• A and B

• A, B, and C

• A, B, C, and D

• C and D

In Figure 8–1, between which parts of the molecule must the bonds be broken to form an ADP molecule?

• A and B

• A and C

• B and C

• C and D

Organisms, such as plants, that make their own food, are called

• autotrophs.

• heterotrophs.

• thylakoids.

• pigments.

Organisms that cannot make their own food and must obtain energy from external sources are called

• autotrophs.

• heterotrophs.

• thylakoids.

• plants.

Which of the following organisms is a heterotroph?

• mushroom

• algae

• wheat

• sunflower

Plants gather energy with light-absorbing molecules called

• pigments.

• thylakoids.

• chloroplasts.

• glucose.

Most plants appear green because chlorophyll

• absorbs green light.

• absorbs violet light.

• does not absorb green light.

• does not absorb violet light.