Energy and respiration

Question 1

4 things energy is needed for

Answer 1

1. anabolic reactions
2. DNA replication
3. active transport
4. mechanical work

Question 2

why is ATP a good source of energy

Answer 2

1. readily hydrolyzes
2. small and polar(water soluble)
3. immediate source of energy
4. high turnover rate

Question 3

2 types of atp synthesis

Answer 3

1. substrate linked (glycolysis, krebs cycle, oxidative phosphorylation(requires oxygen))
2. chemiosmosis (oxidative phosphorylation & ETC)

Question 4

steps of atp production

Answer 4

1. glycolysis
2. link reaction
3. krebs cycle
4. oxidative phosphorylation

Question 5

about glycolysis

Answer 5

1. occurs in cytoplasm
2. 2 atp used
3. 4 atp made
4. net gain 2 atp
5. 2 NaDH produces

Question 6

about link reaction

Answer 6

1. occurs in matrix of mitochondria
2. 2 acetyl CoA
3. 2 CO2
4. 2 NaDH

Question 7

about krebs cycle

Answer 7

1. occurs in matrix of mitochondria
2. acetyl CoA+oxaloacetate = citrate (6C)
3. citrate is decarboxylated to give CO2
4. citrate is dehydrogenated to reduce NAD & FAD

6 NADH
2 ATP
2 FADH2

Question 8

abt oxidative phosphorylation

Answer 8

28 atp produced

Question 9

anaerobic respiration in plants

Answer 9

ATP + 2NADH + ethanol + CO2

Question 10

anaerobic respiration in animals

Answer 10

ATP + 2NADH + lactate

Question 11

after lactate is produces, what 2 things happen

Answer 11

1. oxidized to pyruvate

2. converted into glycogen for storage in liver

Question 12

which has more energy? carbohydrates, proteins, lipids

Answer 12

lipids>proteins>carbohydrates

*more no. of H+, more the energy it produces

Question 13

respiratory quotient

Answer 13

values above 1: anaerobic respiration

values below 1: aerobic respiration