Intro to Metabolism: Redox

Question 1

in spontaneous redox rxns, e- donors give

Answer 1

gives an e- to an e- acceptor

Question 2

if redox is not spontaneous how can it occur

Answer 2

nag must be added

Question 3

another name for e- donor

Answer 3

reducing agent b/c it gets oxidized

Question 4

another name for e- acceptor

Answer 4

oxidizing agent b/c it gets reduced

Question 5

what is dehydrogenation

Answer 5

losing hydrogen b/c sometimes e- is transferred w/a proton, a H+ atom.

Question 6

hydrogenation

Answer 6

gaining hydrogens

Question 7

delta E knot’

Answer 7

difference in standard reduction potential, links free nrg are redox rxns. predicts which redox are spontaneous

Question 8

example of redox rxn with H+. ox/red

Answer 8

2H+ +2e- —> H2. 2H+/H2

Question 9

how are redox couples arranged in e- tower

Answer 9

e- donor w/a more -ive reduction potential are higher up tower than those with +ive reduction potentia

Question 10

how are e- donated by e- tower

Answer 10

donors w/more -ive r.p. can donate to acceptors of redox couple/w a more +ive reduction potential

Question 11

the larger the delta E knot’, the ____ the delta G knot’

Answer 11

larger

Question 12

if e- are passing from redox couples w/a more -ive r.p. to one w/more +ive r.p what is delta G knot’

Answer 12

rxn is spontaneous and delta G knot’ will be -ive