Ch 15 Metabolism II

Question 1

What is fermentation?

Answer 1

The completion of catabolism without electron transport system

Question 2

What is homolactic fermentation?

Answer 2

2 molcs. of lactic acid

Question 3

What is ethanolic fermentation?

Answer 3

2 molcs. ethanol and 2 molcs. CO2

Question 4

What is heterolactic fermentation?

Answer 4

1 molc. lactic acid,1 ethanol, 1 CO2

Question 5

What is mixed-acid fermentation?

Answer 5

Acetate, formate, lactate, succinate, ethanol, H2, CO2

Question 6

Where does the TCA cycle occur in eukaryotes?

Answer 6

The mitochondria

Question 7

Where does the TCA cycle occur in bacteria?

Answer 7

The cytoplasm

Question 8

What is relationship between glycolysis and TCA cycle?

Answer 8

Glucose catabolism connects with TCA cycle through pyruvate breakdown to acetyl-CoA

Question 9

What happens when acetyl-CoA is oxidized?

Answer 9

2 CO2 , 3 NADH, 1 FADH2, 1 ATP (GTP)

Question 10

What happens after TCA cycle?

Answer 10

All the carbons of glucose are released as waste CO2 and NADH and FADH2 donated to terminal acceptor

Question 11

What are the purpose of the glyoxylate shunt?

Answer 11

When glucose is absent cells can catabolize acetate or fatty acids with this

Question 12

What is the anabolic function of TCA cycle?

Answer 12

alpha-ketoglutarate used to make certain amino acids and oxaloacetate used to make aspartate