Biochem exam 3

Select all that inhibit Pyruvate dehydrogenase complex from converting pyruvate to acetyl-CoA

• ATP

• Acetyl-COA

• NADH

• Fatty Acids

• AMP

Select all that activate pyruvate dehydrogenase complex

• AMP

• CoA

• NAD+

• Ca2+

• ATP

Select all that inhibit citrate synthase from converting Acetyl-CoA and Oxaloacetate to citrate

• NADH

• succinyl-COA

• Citrate

• ATP

• NAD+

What activates isocitrate synthase to start converting isocitrate to a-ketoglutarate

• ATP

• Ca2+

• ADP

• NADH

What activates a-ketoglutarate dehydrogenase complex to convert a-ketoglutarate to Succinyl-CoA

• Ca2+

• Succinyl-CoA

• NADH

• AMP

What inhibits a-ketoglutarate dehydrogenase complex from converting a-ketoglutarate to Succinyl-CoA

• Ca2+

• Succinyl-CoA

• NADH

• AMP

Which steps of the TCA produce NADH

• Citrate---> isocitrate

• Isocitrate--> a-ketoglutarate

• a-ketoglutarate--> succinyl coA

• malate--> oxaloacetate

Which step of TCA produces FADH2

• succinyl-CoA --> succinate

• Succinate --> fumarate

• Malate--> Oxaloacetate

• Isocitrate--> a-ketoglutarate

What step of TCA produces ATP/GTP

• Succinate --> fumarate

• Succinyl-CoA--> succinate

• Isocitrate --> a-ketoglutarate

• a-ketoglutarate--> succinyl-CoA

T/F Ca2+ stimulates muscle contraction and in turn stimulates energy-yielding metabolism to replace ATP consumed by contraction

• True

• False