Chapter 8 Quiz

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.

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.

Plants gather energy with light-absorbing molecules called

• pigments.

• thylakoids.

• chloroplasts.

• glucose.

Plants get the energy they need for photosynthesis by absorbing

• high-energy sugars.

• chlorophyll a.

• chlorophyll b.

• sunlight.

Most plants appear green because chlorophyll

• absorbs green light.

• absorbs violet light.

• does not absorb green light.

• does not absorb violet light

Which structure in Figure 8–2 represents a single thylakoid?

• A

• B

• C

• D