Chapter 17: Fatty Acid Catabolism

Question 1

About ____ of our energy needs comes from dietary triacylglycerols

Answer 1

1/3

Question 2

About 80% of energy needs of mammalian heart and liver are met by _______ of fatty acids

Answer 2

Oxidation

Question 3

Describe fats energy storage

Answer 3

Fats carry more energy, less water

Question 4

Describe glycogen energy storage

Answer 4

Long term, slow vs short term, fast delivery

Question 5

During digestion, lipids are transported in the blood as _______

Answer 5

chylomicrons

Question 6

Why do lipids need to packed in particles for transport?

Answer 6

Lipids are not soluble

Question 7

What trigger mobilization of stored triacylglycerols?

Answer 7

Hormones

Question 8

_____ catalyze fat hydrolysis

Answer 8

Lipases

Question 9

Where does hydrolysis (breakdown of triacylglycerol) happen?

Answer 9

In the cytoplasm of adipocytes

Question 10

Glycerol from fats enters ______

Answer 10

Glycolysis

Question 11

The Beta-oxidation of fatty acids occurs in __________

Answer 11

Mitochondria

Question 12

What are the stages of Fatty Acid Oxidation?

Answer 12

Stage 1: Oxidative conversion of two-carbon units into acetyl-CoA vis beta-oxidation with concomitant generation of NADH and FADH2

Stage 2: Oxidation of acetyl-CoA into CO2 via citric acid cycle with concomitant generation NADH and FADH2

Stage 3: Genertaes ATP from NADH and FADH2 via the respiratory chain

Question 13

Shorter chains areb prpocessed by _____________ in the matrix

Answer 13

soluble enzymes

Question 14

Shorter chains (>12) are processed by _____________ in the matrix

Answer 14

soluble enzymes

Question 15

_____ processes fatty acids chains with 12 or more carbons

Answer 15

TFP