Unit 4 section 2

Question 1

Photosynthesis

Answer 1

Photosynthesis is a process that captures energy from sunlight to make sugars that store chemical energy.

Question 2

Chlorophyll

Answer 2

A molecule in chloroplasts that absorbs some of the energy in visible light.

Question 3

Chloroplasts

Answer 3

Chloroplasts are the membrane-bound organelles where photosynthesis takes place in plants.

Question 4

Grana

Answer 4

stacks of coin-shaped, membrane enclosed compartments called thylakoids

Question 5

Thylakoids

Answer 5

The membranes of the thylakoids contain chlorophyll, other light-absorbing molecules, and
proteins.

Question 6

Stroma

Answer 6

The stroma is the fluid that surrounds the grana inside a chloroplast.

Question 7

Light-Dependent Reactions

Answer 7

The light-dependent reactions capture energy from sunlight.

Question 8

Light-Independent Reactions

Answer 8

The light-independent reactions use energy from the light-dependent reactions to make sugars.

Question 9

Starch & Cellulose Molecules

Answer 9

Plants need the simple sugars to build starch and cellulose molecules.