Photosynthesis Reaction Stages

Question 1

In which part of the plant cell do the light-dependent reactions of photosynthesis occur?

Accepted Answer

Chloroplasts (thylakoid membranes)

Answer

Mitochondria

Answer

Nucleus

Answer

Ribosomes

Question 2

What is the main product of the light-dependent reactions of photosynthesis?

Accepted Answer

ATP and NADPH

Answer

Glucose

Answer

Oxygen

Answer

Carbon dioxide

Question 3

During the light-dependent reactions, what molecule is split to provide electrons for the electron transport chain?

Accepted Answer

Water

Answer

Carbon dioxide

Answer

Glucose

Answer

Oxygen

Question 4

Which of the following best describes the Calvin cycle?

Accepted Answer

It occurs in the stroma of the chloroplast and synthesizes glucose using ATP and NADPH.

Answer

It occurs in the thylakoid membranes and uses sunlight to produce glucose.

Answer

It is part of the light-dependent reactions that convert water into oxygen.

Answer

It is a series of steps in which glucose is broken down into carbon dioxide.

Question 5

What is the role of NADPH in photosynthesis?

Accepted Answer

It carries high-energy electrons to the Calvin cycle.

Answer

It stores sunlight for later use.

Answer

It provides energy to power the electron transport chain.

Answer

It absorbs carbon dioxide from the atmosphere.