Metabolism: Redox Couples in ETC

Question 1

complete formula for NAD+/NADH

Answer 1

NAD+ + 2e- + 2H+ —-> NADH + H+

Question 2

fn of NADH (coenzyme)

Answer 2

used in catabolic rxn, carries e- to an ETC.

Question 3

fn of NADPH (coenzyme)

Answer 3

NADP+/NADPH has an added phosphate group. used to carry e- to anaboic rxn

Question 4

complete formula for FAD/FADH2

Answer 4

FAD + 2e- + 2H+ —-> FADH2

Question 5

diffrerence btwn FAD/FADH2 and NAD+/NADH

Answer 5

FAD/FADH2 has a more +ive r.p. than the other redox couple

Question 6

complete formula for FMN/FMNH2

Answer 6

FMN + 2e- + 2H+ —-> FMNH2

Question 7

what are quniones

Answer 7

lipids

Question 8

give example of 2 quinones

Answer 8

UQ +2H+ +2e- —-. UQ(ox) and MQ (menaquinone)

Question 9

Fe3+/Fe2+

Answer 9

Fe3+ +e- —-> Fe2+. found in iron sulphur clusters and heme group