Biochemistry Quiz

In the electron transport chain, which of the following complexes is responsible for reducing oxygen to water?

• Complex I (NADH dehydrogenase)

• Complex II (Succinate dehydrogenase)

• Complex III (Cytochrome b-c1 complex)

• Complex IV (Cytochrome oxidase

In the citric acid cycle, which of the following intermediates is converted into a-ketoglutarate?

• Citrate

• Isocitrate

• Succinyl-CoA

• Oxaloacetate

Which of the following micronutrient is a part of OEC Complex

• Zn

• Mn

• Mg

• K

Which of the following statements about glycolysis is FALSE?

• Glycolysis occurs in the cytosol of cells.

• Glycolysis is the first step in cellular respiration.

• Glycolysis produces 2 ATP and 2 NADH molecules per glucose molecule.

• Glycolysis is an aerobic process.

Which of the following is the primary function of coenzyme Q (CoQ) in the electron transport chain?

• To generate ATP through substrate-level phosphorylation

• To reduce oxygen to water

• To transfer electrons from Complex I to Complex III

• To pump protons across the mitochondrial outer membrane

Which of the following is the primary function of the electron transport chain in cellular respiration?

• To generate ATP through substrate-level phosphorylation

• To generate NADH and FADH2

• To pump protons across the mitochondrial inner membrane

• To synthesize glucose from pyruvate

Which of the following is NOT a product of the light-dependent reaction?

• ATP

• NADPH

• O2

• Glucose

The one of the enzyme responsible for the regeneration of RuBP in the Calvin cycle is:

• RuBisCO

• Phosphoglycerate kinase

• Phosphoenolpyruvate carboxylase

• Sedoheptulose-1,7-bisphosphatase

Which of the following is the primary electron acceptor in photosystem II?

• Plastocyanin

• Cytochrome b6f

• Pheophytin

• Ferredoxin

The enzyme responsible for the fixation of CO2 in C4 plants is:

• RuBisCO

• PEP carboxylase

• Pyruvate kinase

• Fructose-1,6-bisphosphatase