Photosynthesis: Light Independent Reactions Quiz

What is the primary location where the light-independent reactions of photosynthesis occur?

• Stroma of the chloroplast

• Mitochondria

• Thylakoid membrane

• Cytoplasm

Which enzyme catalyzes the reaction between carbon dioxide and ribulose bisphosphate?

• ATP synthase

• NADP reductase

• Rubisco

• Phosphofructokinase

What are the two three-carbon molecules formed from the unstable six-carbon molecule?

• Ribulose bisphosphate

• Triose phosphate

• Glycerate 3-phosphate

• Glucose

Which molecules are used in the conversion of glycerate 3-phosphate to triose phosphate?

• ATP and NADPH

• ADP and NADP+

• FADH2 and NADH

• CO2 and H2O

What is the main purpose of the regeneration phase in the Calvin cycle?

• To produce oxygen

• To fix carbon dioxide

• To regenerate ribulose bisphosphate

• To generate ATP

How many turns of the Calvin cycle are required to produce one molecule of glucose?

• Six

• Four

• Eight

• Three

How many ATP molecules are consumed in the Calvin cycle to produce one glucose molecule?

• 30

• 24

• 18

• 12

What happens to glucose if it is not immediately used in respiration?

• It is used to form proteins

• It is broken down into carbon dioxide

• It is released as oxygen

• It is converted to starch for storage

Which of the following is NOT a product of the light-independent reactions?

• NADP+

• ADP

• Triose phosphate

• Oxygen

What is the role of NADPH in the Calvin cycle?

• It absorbs light

• It provides energy

• It releases oxygen

• It acts as an electron carrier