Chapter 7 -2 Flashcards
Where does stage 2 of Krebs occur?
in the inner compartment/matrix
What does stage 2 of krebs begin and end with?
oxaloacetate
What happens in stage 2 of krebs?
the completion of glucose oxidation
redox rxn’s utilize energy
the reductions of NAD+ FAD_
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
What happens in stage 3 electron transfer phosphorylation?
reduced coenzymes NADH & FADH2 deliver electrons to ETC
What happens to electrons in stage 3?
transported through the chain to oxygen
What happens to energy in stage 3?
released by ETC/electron fall pumps H+’s into the outer compartment creating the H+ gradient
What powers ATP formation?
H+ gradient
Each glucose yields how many molecules of ATP?
36
What is fermentation?
an anaerobic alternative to aerobic respiration
What happens to alcohol fermentation pyruvate in fermentation?
converted to C02 and ethenol
What happens to NAD in fermentation?
oxidized recycling NAD+
What happens in lactic acid fermentation?
pyruvate is converted to lactic acid and NAD+ is recycyled
Lactic acid is used to make what?
cheese and yogurt
Aerobic have?
slow muscle fibers that support sustained activity
