Importance of Coenzymes - Respiration

Question 1

Function of NAD

Answer 1

Accepts hydrogen atoms with its electrons and becomes reduced. When it loses its electrons, it is oxidised. NAD operates during glycolysis, link reaction, Krebs cycle and during anaerobic ethanol and lactate pathways.

Question 2

Functions of reduced NAD and reduced FAD

Answer 2

Both carry electrons for ETC and protons for chemiosmosis.

Question 3

Function of Coenzyme A (CoA)

Answer 3

Carries acetate groups made from pyruvate (during link reaction) onto the Krebs cycle.

Question 4

Function of reduced NADP

Answer 4

Carries electrons to the Calvin Cycle to be oxidised where it supplies electrons to reduce GP to TP.