9. Photosynthesis

The main product of photosynthesis is:

Which of the following reactants is reduced during the process of photosynthesis?

Energy used to power photosynthesis & ultimately cellular respiration originates from which energy source?

In photosynthesis, _________ is oxidized and _________ is reduced.

a. Water . . . Oxygen

b. Carbon dioxide . . . Water

c. Water . . . Carbon dioxide

d. Glucose . . . Carbon dioxide

Which of the following statements is a correct distinction between autotrophs and heterotrophs?

a. Autotrophs, but not heterotrophs, can nourish themselves beginning with CO₂ and other nutrients that are inorganic.

b. Only heterotrophs require chemical compounds from the environment.

c. Cellular respiration is unique to heterotrophs.

d. Only heterotrophs have mitochondria.

Select the true statement regarding metabolism in plant and animal cells.

a. Plant and animal cells both perform photosynthesis and aerobic respiration.

b. Animal cells perform aerobic respiration only, and plant cells perform photosynthesis only.

c. Plant cells perform aerobic respiration only, and animal cells perform photosynthesis only.

d. Plant cells perform cellular respiration and photosynthesis, and animal cells perform aerobic respiration only.

Compare and describe the roles of CO₂ and H₂O in cellular respiration and photosynthesis.