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18 Questions

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Photosynthesis Process Overview Quiz

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Questions and Answers

What is the main function of the Calvin cycle in photosynthesis?

Produce glucose molecules

Export oxygen molecules

Regenerate RuBP (correct)

Store sunlight energy

What is the role of G3P in the Calvin cycle?

Regenerates RuBP (correct)

Stores sunlight energy

Fixes carbon dioxide

Exported as a final product

Which enzyme is crucial for the fixation of carbon dioxide in the Calvin cycle?

ATP synthase

NADH dehydrogenase

RuBisCO (correct)

Chlorophyllase

How many G3P molecules are exported out of the Calvin cycle?

One Signup and view all the answers

What is the purpose of regenerating RuBP in the Calvin cycle?

To fix more carbon dioxide Signup and view all the answers

What molecule produced in the light-dependent reactions provides energy for the Calvin cycle?

ATP Signup and view all the answers

What type of reaction occurs during the Calvin cycle?

Reduction process Signup and view all the answers

Which enzyme catalyzes the reaction where carbon dioxide combines with ribulose-1,5-biphosphate in the Calvin cycle?

RuBisCO Signup and view all the answers

During the Calvin cycle, what is the specific compound produced by combining carbon dioxide with a five-carbon sugar?

Glyceraldehyde 3-phosphate (G3P) Signup and view all the answers

What is the main purpose of the RuBisCO enzyme in the Calvin cycle?

Catalyze the reaction between carbon dioxide and ribulose-1,5-biphosphate Signup and view all the answers

What role does ATP play during the Calvin cycle?

It provides energy for building high-energy sugars Signup and view all the answers

Which part of the plant allows carbon dioxide to enter the Calvin cycle?

Leaves' stomata Signup and view all the answers

What is the purpose of fixation in the Calvin Cycle?

To pluck carbon atoms from carbon dioxide and attach them to an organic molecule Signup and view all the answers

Which enzyme is responsible for catalyzing the conversion of 3-phosphoglycerate (PGA) into glyceraldehyde 3-phosphate (G3P)?

PGA Kinase Signup and view all the answers

How many 'turns' of the Calvin Cycle are required to fix enough carbon to export one molecule of G3P?

Three turns Signup and view all the answers

What is the primary function of RuBisCO in the Calvin Cycle?

Catalyze the fixation of carbon dioxide Signup and view all the answers

During the reduction phase of photosynthesis, what happens to NADPH?

It gains an electron and a hydrogen atom Signup and view all the answers

What is the product of converting six molecules of 3-phosphoglycerate (PGA) during the reduction phase of photosynthesis?