Chapter 21 Quiz 2

Which of the following correctly describes NADPH?

• a compound that combines with the 5-C compound in the Calvin cycle

• a compound that donates hydrogen to NADP in photochemical reactions

• a product of the photochemical reactions and is used in the Calvin cycle

• a product of the photochemical reactions and is not used in the Calvin cycle

Which of the following correctly describes water?

• a compound that combines with the 5-C compound in the Calvin cycle

• a compound that donates hydrogen to NADP in photochemical reactions

• a product of the photochemical reactions and is used in the Calvin cycle

• a product of the photochemical reactions and is not used in the Calvin cycle

Which of the following correctly describes oxygen?

• a compound that combines with the 5-C compound in the Calvin cycle

• a compound that is regenerated in the Calvin cycle

• a product of the photochemical reactions and is used in the Calvin cycle

• a product of the photochemical reactions and is not used in the Calvin cycle

Which of the following correctly describes carbon dioxide?

• a compound that combines with the 5-C compound in the Calvin cycle

• a compound that is regenerated in the Calvin cycle

• a product of the photochemical reactions and is used in the Calvin cycle

• a product of the photochemical reactions and is not used in the Calvin cycle

Which of the following are the uses of glucose produced in photosynthesis?

(1) releasing energy in respiration

(2) conversion to starch for storage

(3) synthesizing cellulose

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

From 1 unit of light intensity to 2 units of light intensity, the rate of photosynthesis increases because more energy is supplied to the reaction.

• True

• False

At 2 units of light intensity, light intensity is the limiting factor for photosynthesis.

• True

• False

At 6 units of light intensity, light intensity is the limiting factor for photosynthesis.

• True

• False

Increasing the carbon dioxide concentration from 0.04% to 0.4% would lead to a higher rate of photosynthesis at 6 units of light intensity.

• True

• False