Understanding the Calvin Cycle

What is the primary purpose of the Calvin cycle in photosynthesis?

• To capture light energy

• To convert carbon dioxide into glucose

• To release oxygen

• To absorb water

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NGSS.HS-LS2-5

Which molecule is fixed during the Calvin cycle?

• Oxygen

• Nitrogen

• Carbon dioxide

• Methane

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NGSS.HS-LS2-5

In which part of the chloroplast does the Calvin cycle take place?

• Thylakoid membrane

• Stroma

• Grana

• Outer membrane

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NGSS.HS-LS1-6

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

• ATP synthase

• Rubisco

• NADP reductase

• Cytochrome c oxidase

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NGSS.HS-LS2-5

What is the main product of the Calvin cycle?

• Oxygen

• Glucose

• ATP

• NADPH

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NGSS.HS-LS2-5

NGSS.HS-LS1-5

How many molecules of ATP are consumed in one turn of the Calvin cycle?

• 2

• 3

• 9

• 12

What is chemosynthesis?

• The process of converting light energy into chemical energy

• The process of converting chemical energy into organic compounds

• The process of breaking down glucose into energy

• The process of synthesizing proteins from amino acids

Which of the following is NOT a phase of the Calvin cycle?

• Carbon fixation

• Reduction

• Regeneration of RuBP

• Photolysis

How many molecules of NADPH are used in one complete cycle of the Calvin cycle?

• 2

• 6

• 8

• 12

Which of the following best describes the relationship between photosynthesis and the Calvin cycle?

• The Calvin cycle occurs before photosynthesis

• The Calvin cycle is a light-dependent reaction

• The Calvin cycle is part of the light-independent reactions of photosynthesis

• The Calvin cycle produces ATP for photosynthesis