chapter 26

Question 1

NADH donates electrons to pyruvte reducing it to lactate and regenerate NAD+

Answer 1

anaerobic `fermentation

Question 2

no oxygen; cells generate ATP through glycolysis

Answer 2

anaerobic fermentation

Question 3

glycolysis cant continue without supply of

Answer 3

NAD+ for anaerobic fermentation

Question 4

during anaerobic fermentation, __ leaves the cells that generate it and travel to the liver via the blood

Answer 4

lactate

Question 5

wasteful, bc most of the energy of glucose is still in the lactate and has contributed no useful work

Answer 5

anaerobic fermentation

Question 6

the brain employs no

Answer 6

anaerobic fermentation

Question 7

most ATP generated in mitochondria, which requires oxygen as final electron acceptor

Answer 7

aerobic respiration

Question 8

in the presence of oxygen, pyruvate enters the mitochondria

Answer 8

aerobic respiration

Question 9

aerobic respiration occurs in two principle steps

Answer 9

matrix reactions and membrane reactions

Question 10

their controlling enzymes are in the fluid of the mitochondrial matrix

Answer 10

matrix reactions

Question 11

their controlling enzymes are bound to the membranes of the mitochondrial cristae

Answer 11

membrane reactions

Question 12

produces ATP from glucose and oxygen

Answer 12

aerobic respiration

Question 13

body converts extra glucose to

Answer 13

glycogen and fat

Question 14

important source of stored glucose

Answer 14

glycogen