Tca Cycle -Multiple Choice Questions Quiz

Interactive MCQs on “Tca 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 main purpose of the TCA cycle in cellular respiration?

(A) To produce oxygen
(B) To produce glucose
(C) To generate ATP, NADH, and FADH2
(D) To synthesize proteins

Question 2:Where does the TCA cycle take place in the cell?

(A) Cytoplasm
(B) Mitochondrial membrane
(C) Mitochondrial matrix
(D) Nucleus

Question 3: Which molecule enters the TCA cycle after being converted into acetyl-CoA?

(A) Glucose
(B) Pyruvate
(C) NADH
(D) Acetyl-CoA

Question 4:Which molecule is produced in the first step of the TCA cycle?

(A) Pyruvate
(B) Citrate
(C) NADH
(D) FADH2

Question 5:How many molecules of NADH are produced per cycle of the TCA cycle?

(A) One
(B) Two
(C) Three
(D) Four

Question 6:Which intermediate is formed by the decarboxylation of alpha-ketoglutarate in the TCA cycle?

(A) Malate
(B) Oxaloacetate
(C) Succinyl-CoA
(D) Fumarate

Question 7:What is the final product of the TCA cycle that is also needed to restart the cycle?

(A) Acetyl-CoA
(B) Citrate
(C) NADH
(D) Oxaloacetate

Question 8:Which molecule is produced during the conversion of succinyl-CoA to succinate in the TCA cycle?

(A) GTP
(B) NADH
(C) FADH2
(D) ATP

Question 9:Which enzyme is involved in the conversion of malate to oxaloacetate in the final step of the TCA cycle?

(A) Malate dehydrogenase
(B) Citrate synthase
(C) Succinate dehydrogenase
(D) Isocitrate dehydrogenase

Question 10:How many molecules of CO2 are released during each turn of the TCA cycle?

(A) One
(B) Two
(C) Three
(D) Four