Lesson 5: Light Independent Reactions in Photosynthesis

Question 1

Which is an important difference between light-dependent (L-D) and light-independent (L-IND) reactions in photosynthesis?

Revolt · Accepted Answer

The L-D reactions require light energy and water, and the L-IND reactions require ATP, NADPH, and CO2.

Question 2

Which process occurs during the light-dependent reactions in photosynthesis?

Revolt · Accepted Answer

Water molecules are split.

Question 3

Which compound is produced during regeneration?

Revolt · Accepted Answer

RuBP

Question 4

In the chemical equation for photosynthesis, carbon dioxide and water are converted to glucose and oxygen.6CO2 + 6H2O ® C6H12O6 + 6O2Which component could be added to complete this chemical equation?

Revolt · Accepted Answer

light energy

Question 5

During reduction, PGA reacts with ATP and NADPH. What does ATP contribute to the reaction?

Revolt · Accepted Answer

phosphate group

Question 6

What is one role of ATP in the light-independent reaction of photosynthesis?

Revolt · Accepted Answer

ATP supplies the energy to produce glucose and other carbohydrates.

Question 7

In which type of environment are plants most likely to use a C4 pathway of carbon fixation?

Revolt · Accepted Answer

hot and dry

Question 8

Which is required for the light-dependent reactions in photosynthesis to occur?

Revolt · Accepted Answer

H2O

Question 9

Which is the best hypothesis for the scientific question “How does light intensity affect the rate of photosynthesis?”

Revolt · Accepted Answer

If the distance between the source of light and the plant is increased, the rate of photosynthesis will decrease.

Question 10

Which compound is a metabolic intermediate of the light-independent reactions in photosynthesis?

Revolt · Accepted Answer

PGA

Lesson 5: Light Independent Reactions in Photosynthesis Answers

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