Biology Quiz on Cellular Respiration and the Krebs Cycle

What is the net gain of ATP in glycolysis?

• 1

• 0

• 4

• 2

What is the primary function of coenzyme A (CoA)?

• To produce ATP

• To catalyze reactions

• To carry acetyl groups

• To oxidize glucose

Which enzyme catalyzes the conversion of isocitrate to α-ketoglutarate?

• Fumarate hydratase

• Citrate synthase

• Isocitrate dehydrogenase

• Succinyl-CoA synthase

What is produced during the link reaction?

• NADH

• GTP

• FADH2

• ATP

What is the end product of glycolysis?

• Acetyl-CoA

• Pyruvate

• NADH

• Glucose

How many ATP molecules are produced in one cycle of the Krebs cycle?

• 4

• 3

• 2

• 1

What is the role of ATP synthase in oxidative phosphorylation?

• To transport electrons

• To oxidize NADH

• To synthesize ATP

• To produce FADH2

Which molecule is formed at the end of the Krebs cycle?

• Acetyl-CoA

• Fumarate

• Citrate

• Oxaloacetate

What is the function of NAD+ in cellular respiration?

• To donate electrons

• To catalyze reactions

• To accept electrons

• To produce ATP

What is the first step of the Krebs cycle?

• Formation of succinate

• Formation of isocitrate

• Formation of citrate

• Formation of malate