GI Fat metabolism. UNFINISHED

Question 1

Approximately how much energy do we have stored as carbohydrates?

Answer 1

2000kcal

Question 2

Approximately how much of our energy stores are glycogen in muscles?

Answer 2

1500kcals

Question 3

Approximately how much energy do we store as adipose tissue?

Answer 3

80,000+ kcals

Question 4

Approximately how much energy do we store in muscle?

Answer 4

30,000 kcals

Question 5

What is the most common form of dietary cholesterol?

Answer 5

Cholesterol esters which are broken down by pancreatic esterase hydrolyses in the small intestine.

Question 6

How and where is cholesterol processed?

Answer 6

Most cholesterol is processed in the liver by being esterefied intracellularly.

Question 7

How are cholesterol molecules transported in the blood?

Answer 7

Via lipoprotiens that carry both triglycerides and cholesterol.

Question 8

Where is “good cholesterol” found?

Answer 8

In high density lipoprotiens.

Question 9

What is cholesterol role in the body?

Answer 9

The body needs a small amount of cholesterol for the synthesis of hormones and vitamin D.

Question 10

What is beta oxidation

Answer 10

Catabolic process by which fatty acid molecules are broken down in the mitochondria to generate acetyl-CoA

Question 11

What is beta oxidation?

Answer 11

Catabolic process by which fatty acid molecules are broken down in the mitochondria to generate acetyl-CoA, NADH and FADH2.

Question 12

What is the net gain in atp for beta oxidation?

Answer 12

Varies on size of fatty acid but v large e.g. 146 atp for C18.