FAT METABOLISM

Question 1

What is the most efficient fuel source?

Answer 1

Fat
[yielding 9 kcal/g compared with 4 kcal/g for stored carbs and proteins]

Question 2

What percentage of calories are obtained from fat?

Answer 2

30-35%

Question 3

Many carbs consumed in diet are converted to what? And stored as what?

Answer 3

Converted to triglycerides
Stored as adipose tissue (fat)

Question 4

What are triglycerides?

Answer 4

3 fatty acids linked by glycerol molecule

Question 5

What is function of lipase (enzyme)?

Answer 5

Breaks down triglycerides into their 4 components when stored fats are utilized for fuel

Question 6

Function of glycerol?

Answer 6

Used in the glycolytic pathway and can be used with glucose to produce energy to produce glucose

Question 7

Fatty acids are transported to what?

Answer 7

Tissues

Question 8

Fatty acids are transported to tissues and can be used with glucose for energy in almost all body cells except?

Answer 8

Brain, nervous system, and red blood cells

Question 9

Liver converts left over fatty acids into what? And releases them where?

Answer 9

Ketones
Bloodstream

Question 10

What happens when large amounts of ketones (organic acids) are released in bloodstream?

Answer 10

Kebacidosis