Section 4: Bacterial Metabolism

Question 1

catabolism + anabolism = ___

Answer 1

metabolism

Question 2

Glycolysis

Answer 2

• occurs in presence or absence of oxygen
• 1 glucose -> 2 pyruvate (universal intermediate)
• net gain of 2 ATP and 2 NADH

Question 3

TCA cycle // Kreb’s cycle

Answer 3

• repeated twice
• pyruvic acid completely oxidized to water and CO2
• net gain: 2 ATP, 6 NADH, 2 FADH2 (NADH and FADH2 enter ETC)

Question 4

Electron Transport Chain (ETC)

Answer 4

• Final acceptor is OXYGEN
• ATP synthesized as a result of proton motor force by passing electrons along the chain (chemiosmotic theory)
• use reducing power of NADH and FADH2 to create ATP = oxidative phosphorylation

Question 5

oxidative phosphorylation in ETC

Answer 5

use reducing power of NADH and FADH2 to create ATP

Question 6

Aerobic respiration

Answer 6

transfer of e- from NADH and FADH2 to O2

Question 7

Anaerobic respiration

Answer 7

absence of O2 - e- are transferred to inorganic terminal e- acceptor ie sulfur

Question 8

Fermentation

Answer 8

absence of O2 - e- are transferred to organic terminal e- acceptor. Used by organisms that can’t respire
- pyruvate to lactic acid (yogurt)

Question 9

ATP yield from catabolism of Glucose

Answer 9

Aerobic Respiration = 38 ATP
Anaerobic Respiration = 30 or less ATP
Fermentation = 2-4 ATP