Lecture 8: Fermentation and Respiration

Question 1

Regeneration of NAD+

Answer 1

Help.. IDK what this slide is trying to say

Question 2

Fermentation is performed by _____ _____

Answer 2

anaerobic microorganisms

Question 3

the primary purpose of fermentation is _____

Answer 3

regenerate NAD for reuse

Question 4

The _____ is the electron acceptor in fermentation

Answer 4

organic molecule

Question 5

The secondary purpose of fermentation is

Answer 5

generate additional energy

Question 6

the energy yields of fermentation are _____

Answer 6

very small

Question 7

since the energy yields of fermentation are small, the growth rates are _____

Answer 7

slower

Question 8

What uses lactic acid fermentation

Answer 8

muscles, yogurt, and sourdough bread

Question 9

What are the two reasons fermentation is important to the cell

Answer 9

electrons from metabolism are dumped and is a potential source of ATP for the cell

Question 10

What are the two reasons fermentation is important for humnas

Answer 10

means of classifying bacteria and important source of solvents

Question 11

Electrons pass from good _____ to good ______ when delta G is _____ ______ 0

Answer 11

good donors to good acceptors when delta g is less than 0

Question 12

NADH + H+ is an excellent _____ _____

Answer 12

electron donor

Question 13

1/2 O2 is the strongest _____ _____ since it is so electronegative

Answer 13

electron acceptor

Question 14

Molecules differ in their ____ ___ _____

Answer 14

affinity for electrons

Question 15

when capturing re-dox energy, it is most efficient to _____

Answer 15

have a complex process with multiple steps that better capture energy

Question 16

Where does electron transport usually occur

Answer 16

on membranes

Question 17

the _____ _____ is usually present outside the cell

Answer 17

electron acceptor

Question 18

Electron transport systems are needed in large quantities for _______

Answer 18

respiration

Question 19

___ _____ ____ must be captured by cell cytoplasm

Answer 19

electron passage energy

Question 20

The respiratory ETS requires ______ and _____ _____

Answer 20

intermediates and multiple steps

Question 21

Electrons from ______ to ___ release energy

Answer 21

NADH to O2

Question 22

What are the 3 common features in many ETS pathways

Answer 22

NADH Oxidase, Quinones, and Cytochromes

Question 23

Flavoproteins are _____ proteins with a ____ _____ such as FAD or FMN

Answer 23

common proteins with a flavin cofactor

Question 24

Flavoproteins can carry _____ ____ and ____ ____

Answer 24

two protons and two electrons

Question 25

Quinones contain _____ lipids

Answer 25

isoprenoid