Lipid Metabolism

Question 1

Trigylcerides

Answer 1

lipids.

Question 2

Dietary uptake of lipids

Answer 2

Lumen of small intestine. Lipase breaks down triglycerides to monos and fatty acids for transport. Then back to triglycerides to be stored in adipose tissue

Question 3

Do carbs or fats store more energy?

Answer 3

Fats. In suagrs, it’s more oxidized, so less energy can be produced.

Question 4

How many calories per gram of carb?

Answer 4

4

Question 5

how many calories per gram of fat?

Answer 5

9-10

Question 6

Catabolism of Fatty Acids

Answer 6

When glucagon is present, triglycerides are broken down via lipase into glycerol and FA’s. It then goes to liver and then glycolysis or gluconeogensis. OR the FA’s/glycerols go to Acetyl CoA in mitochondria of other tissues and then enters the CAC cycle.

Question 7

Beta Oxidation

Answer 7

CoA activates beta oxidation. Thyolisis.oxidation and reduction gives us FADH2 and NADH.

Question 8

Unsaturated fatty acid

Answer 8

double bonds. the bonds are not “saturated” with hydrogen bonds. Less energy and you get one less FADH2.

Question 9

Beta Oxidation of stearate

Answer 9

Goes through 8 rounds. Puts 9 Acetyl CoA through Krebs cycle yielding 120 ATP