Chapter 6 (pdf 17)

Question 1

uses reducing power to generate ATP

Answer 1

respiration

Question 2

NADH and FADH2 transfer electrons to produce proton motive force

Answer 2

respiration

Question 3

allows for recycling of electron carriers*

Answer 3

respiration

Question 4

electrons reduce terminal electron acceptor

Answer 4

respiration

Question 5

oxygen is in aerobic respiration

Answer 5

respiration

Question 6

aerobic respiration uses another organic molecule

Answer 6

respiration

Question 7

itself generates no ATP only ATP is from glycolysis/TCA

Answer 7

fermentation

Question 8

does allow for recycling of NADH

Answer 8

fermentation

Question 9

oxygen and streptococcus both like

Answer 9

fermentation

Question 10

partial oxidation of glucose

Answer 10

fermentation

Question 11

recycles NADH pool

Answer 11

fermentation

Question 12

uses pyruvate or derivative as terminal electron acceptor

Answer 12

fermentation

Question 13

used by organisms that can not respire

Answer 13

fermentation

Question 14

organisms can not respire during fermentation due to

Answer 14

lack of suitable inorganic electron acceptor or lack of transport chain

Question 15

only ATP produced is by glycolysis or TCA

Answer 15

fermentation

Question 16

other steps for consuming excess reducing power in fermentation

Answer 16

• recycles NADH

- fermentation pathways use pyruvate or derivative as terminal electron acceptor

Question 17

end products of fermentation

Answer 17

Lactic acid	
– Ethanol	
– Butyric	acid	
– Propionicacid	
– 2,3-Butanediol	
– Mixed	acids	
--all are produced in a series of reaction to produce appropriate terminal electron acceptors

Question 18

pyruvate acts as the terminal electron acceptor

Answer 18

lactic acid

Question 19

pyruvate converted o lactate by LDH

Answer 19

lactic acid

Question 20

produces lactic acid

e.g Streptococcus, Lactococcus or Enterococcus

Answer 20

Homolactic fermentation

Question 21

produced lactic acid, alcohol, and CO2

• e.g Leuconostoc, Oenococcus, Weissella

Answer 21

Heterolactic fermentation

Question 22

pyruvate loses CO2

Answer 22

Ethanol

Question 23

Acetylaldehyde to Alcohol

•NADH to NAD+

Answer 23

Ethanol

Question 24

Beer, wine, spirits and biofuel
• Saccharomyces
• Zymonmonas

Answer 24

Ethanol

Question 25

Produced by obligate anaerobes

e.g. Clostridium sp

Answer 25

Butyric acid

Question 26

Converted to ‘fuel’ in form of butanol and acetone

Answer 26

Butyric acid

Question 27

•e.g Propionibacterium used for Swiss

cheese

Answer 27

• Propionic acid formation

Question 28

•e.g. Aspergillus used flavoring in soda

Answer 28

• Citric acid

Question 29

two pyruvate convert to acetonin

Answer 29

2,3 Butanediol

Question 30

differentiate Enterobactericeae

e.g. Klebisella vs E. coli

Answer 30

2,3 Butanediol

Question 31

Voges-Proskauer test

Answer 31

2,3 Butanediol

Question 32

Acetic acid, lactic acid, succinic acid

Answer 32

•Mixed acids

Question 33

Methyl-red test

• E. coli vs Enterobacter

Answer 33

•Mixed acids