BIO O24 SAS 7

In Krebs Cycle, which step involves substrate-level phosphorylation?

• Step 8

• Step 7

• Step 6

• Step 5

Which molecule is produced when oxygen accepts electrons and hydrogen ions?

• ATP

• NADH

• H2O

• CO2

The process by which protons flow through ATP synthase to produce ATP is called:

• Oxidation

• Decaboxylation

• Chemiosmosis

• Phosphorylation

Which complex in the ETC accepts electrons from NADH?

• Complex I

• Complex II

• Complex III

• Complex IV

Which step of the Krebs Cycle produces FADH2?

• Isocitrate → a-Ketoglutarate

• Succinyl-CoA →Succinate

• Succinate → Fumarate

• Malate → Oxaloacetate

A three-enzyme system that catalyzed the oxidation of a-Ketoglutarate:

• Aconitase

• Succinyl-CoA synthase

• a-Ketoglutarate dehydrogenase

• Succinate dehydrogenase

What is the final electron acceptor in the electron transport chain?

• FAD

• Cytochrome c

• NAD+

• Oxygen

Which complex in the ETC accepts electrons from FADH2?

• Complex I

• Complex II

• Complex III

• Complex IV

Which enzyme catalyzes the conversion of citrate to isocitrate in the Krebs Cycle?

• Isocitrate dehydrogenase

• Aconitase

• Fumarase

• Citrate synthase

During which step of the Krebs Cycle is GTP produced?

• Step 8

• Step 7

• Step 6

• Step 5