9.2

Question 1

Anaerobic respiration

Answer 1

Inorganic molecules (not O2) used as final electron acceptor
-free energy released and ATP produces is less than with O2

Question 2

Fermentation

Answer 2

-glycolysis is only source of ATP
-Use of organic molecules as final electron acceptor
-reduces organic molecules in order to regenerate NAD+

Question 3

Ethanol fermentation in yeast

Answer 3

CO2, ethanol, and NAD+ are produced

Question 4

Lactic acid fermentation

Answer 4

-occurs in animal cells (muscles)
-electrons are transferred from NADH to pyruvate to produce lactic acid

Question 5

Catabolism of proteins

Answer 5

-Amino acids undergo delaminating to remove the amino group
-remainder of the amino acid is converted to a molecule that enters glycolysis or the Krebs cycle

Question 6

Catabolism of fats

Answer 6

-fats are first broken down to fatty acids and glycerol
-fatty acids are converted to acetyl groups by B-oxidation
—each acetyl group is combined with coenzyme A to form acetyl-CoA
—Acetyl-CoA enters Krebs cycle