Chapter 7 -2 Flashcards Preview

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Flashcards in Chapter 7 -2 Deck (16):
1

Where does stage 2 of Krebs occur?

in the inner compartment/matrix

2

What does stage 2 of krebs begin and end with?

oxaloacetate

3

What happens in stage 2 of krebs?

the completion of glucose oxidation
redox rxn's utilize energy
the reductions of NAD+ FAD_

4

What are the results of Stage 2 Krebs?

all carbons of pyruvate end up in C02
2 ATP made by substrate level phosphorylation
8 NADH AND 2 FADH2

5

What happens in stage 3 electron transfer phosphorylation?

reduced coenzymes NADH & FADH2 deliver electrons to ETC

6

What happens to electrons in stage 3?

transported through the chain to oxygen

7

What happens to energy in stage 3?

released by ETC/electron fall pumps H+'s into the outer compartment creating the H+ gradient

8

What powers ATP formation?

H+ gradient

9

Each glucose yields how many molecules of ATP?

36

10

What is fermentation?

an anaerobic alternative to aerobic respiration

11

What happens to alcohol fermentation pyruvate in fermentation?

converted to C02 and ethenol

12

What happens to NAD in fermentation?

oxidized recycling NAD+

13

What happens in lactic acid fermentation?

pyruvate is converted to lactic acid and NAD+ is recycyled

14

Lactic acid is used to make what?

cheese and yogurt

15

Aerobic have?

slow muscle fibers that support sustained activity

16

Anaerobic have?

fast muscle fibers that support quick bursts of activity