Calvin Cycle -Multiple Choice Questions Quiz

Interactive MCQs on “Calvin Cycle”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is the primary function of the Calvin Cycle in photosynthesis?

(a) Absorption of sunlight
(b) Production of ATP
(c) Fixation of carbon dioxide
(d) Generation of oxygen

Question 2: In which part of the chloroplast does the Calvin Cycle take place?

(a) Thylakoid membrane
(b) Grana
(c) Stroma
(d) Chlorophyll

Question 3: What is the primary energy carrier used in the Calvin Cycle?

(a) NADPH
(b) ATP
(c) Chlorophyll
(d) Carbon dioxide

Question 4: What is the initial acceptor molecule for carbon dioxide in the Calvin Cycle?

(a) Glucose
(b) RuBP (Ribulose-1,5-bisphosphate)
(c) PGA (Phosphoglyceric aci
(d)

Question 5: How many molecules of PGA (Phosphoglyceric acid) are produced after one turn of the Calvin Cycle?

(a) 1
(b) 2
(c) 3
(d) 6

Question 6: During the Calvin Cycle, PGA (Phosphoglyceric acid) is converted into a 3-carbon sugar. What is the name of this sugar?

(a) Glucose
(b) G3P (Glyceraldehyde-3-phosphate)
(c) Ribulose
(d) Fructose

Question 7: What is the enzyme responsible for carbon fixation during the Calvin Cycle?

(a) Rubisco (Ribulose-1,5-bisphosphate carboxylase/oxygenase)
(b) ATP synthase
(c) Cytochrome b6f
(d) NADPH reductase

Question 8: What molecule provides the phosphate group required to convert PGA into G3P during the Calvin Cycle?

(a) NADPH
(b) ATP
(c) Rubisco
(d) Chlorophyll

Question 9: What is the fate of G3P (Glyceraldehyde-3-phosphate) produced in the Calvin Cycle?

(a) Used to synthesize ATP
(b) Converted into glucose and other carbohydrates
(c) Released as oxygen gas
(d) Transported to the thylakoid membrane

Question 10: How many turns of the Calvin Cycle are required to produce one molecule of glucose?

(a) 1
(b) 2
(c) 3
(d) 6