Kreb's Cycle

Which molecule enters the Kreb's cycle?

• Acetyl CoA
• Glucose
• ADP
• Pyruvate

What is the first step of the Kreb's cycle?

• Acetyl CoA combining with oxaloacetate
• Conversion of pyruvate to acetyl CoA
• Formation of citrate
• Decarboxylation of alpha-ketoglutarate

What is the final electron acceptor in the Kreb's cycle?

• Oxygen
• ADP
• NAD+
• FAD

Which enzyme is responsible for the conversion of succinyl-CoA to succinate in the Kreb's cycle?

• Succinyl-CoA synthetase
• Fumarase
• Citrate synthase
• Isocitrate dehydrogenase

Which molecule is produced during the Kreb's cycle that is used in oxidative phosphorylation?

• NADH
• FADH2
• Citrate
• Acetyl CoA

Which molecule provides the input for the Krebs cycle?

• Acetyl-CoA
• Glucose
• Lactic Acid
• Pyruvate

Which molecule is produced as a byproduct of the Krebs cycle?

• Carbon dioxide
• Water
• Glucose
• Oxygen

What is the net ATP production per turn of the Krebs cycle?

• 1 ATP
• 3 ATP
• 0 ATP
• 2 ATP

Which enzyme catalyzes the conversion of succinyl-CoA to succinate in the Krebs cycle?

• Succinyl-CoA synthetase
• Malate Dehydrogenase
• Citrate Synthase
• Isocitrate Dehydrogenase

What is the final product of the Krebs cycle?

• Oxaloacetate
• Citrate
• Alpha-ketoglutarate
• Malate