2.3- Plant Cellular Respiration

Question 1

site for glycolysis

Answer 1

cytosol

Question 2

two ways for splitting sucrose

Answer 2

1. inverse pathway (irreversible)
2. sucrose synthase pathway (reversible)

Question 3

when the 2 different pathways replace each other in the splitting of sucrose w/o a clear loss in function because they are similar

Answer 3

metabolic redundancy

Question 4

two phases of glycolysis

Answer 4

energy investment phase, energy payoff phase

Question 5

glycolysis phase where cell spends ATP

Answer 5

energy investment phase

Question 6

glycolysis phase where ATP is produced by substrate-level phosphorylation; NAD+ is reduced to NADH by electrons released from the oxidation of glucose

Answer 6

energy payoff phase

Question 7

transports pyruvate directly to the mitochondrion

Answer 7

pyruvate dehydrogenase

Question 8

transports oxaloacetate directly to mitochondrion and converts it to malate

Answer 8

PEP cerboxylase & malate dehydrogenase

Question 9

alternative pathway for oxidation of sugars; carried by enzymes in cytosol and plastids; converts glucose-p to pentose-p

Answer 9

oxidative pentose phosphate pathway

Question 10

function of oxidative pentose-phosphate pathway

Answer 10

-NADPH supply in cytosol & plastids
- substrate supply for biosynthetic pathways

Question 11

main function of Acetyl-CoA

Answer 11

deliver acetyl group to the citric acid cycle to be oxidized for energy production

Question 12

enzyme used by animals to form GTP

Answer 12

succinyl coA synthetase

Question 13

catalyzes flow of electrons from NADH to O2; O2 dependent process; releases a bulk amount of energy

Answer 13

oxidative phosphorylation

Question 14

ATP synthase subunit- peripheral membrane protein; catalytic sides for ATP synthesis

Answer 14

F1

Question 15

ATP synthase subunit- integral membrane protein; provides pathwway to translocating proton

Answer 15

F0