Lipids exam 1

Question 1

Digestion of lipds

Answer 1

1. begins in the mouth (little digestion)
2. stomach (broken down into droplets)
3. Bile (gallbladder)
4. lipid digesting enzymes from the pancreas
5. Micelles form
6. transported to entrocyte
7. proteins are added and made into chylomicrons

Question 2

Absorption of lipids?

Answer 2

5. Micelles form
6. transported to entrocyte
7. proteins are added and made into chylomicrons
8. fats are transported to the cells of our body

Question 3

What are the 4 different lipoproteins?

Answer 3

VLDL
HDL
LDL
IDL

Question 4

What does VLDL do?

Answer 4

transfers fat to cells

Question 5

What does HDL do?

Answer 5

transports fat from tissue to liver (reverse transport)

Question 6

What does LDL do?

Answer 6

transfers fat to cells

Question 7

What does IDL do?

Answer 7

transfers fat to cells

Question 8

What enzyme is need for TG to enter the cell?

Answer 8

lipase

Question 9

What is the health message for the last 30 years for saturated fats?

Answer 9

an increase in LDL results in an increase of CVD

Question 10

What limitations or flaws could explain why there is no association observed in the controversy of saturated fat?

Answer 10

• Self reporting of dietary data – potential bias
• Prospective cohort
• Limited number of studies for some of the analysis

Question 11

Why the great fat debate?

Answer 11

may have a greater impact on heart disease than saturated fat
most health experts agree that reducing the amount of saturated fat will reduce the risk

Question 12

What were the conclusions from the great fat debate?

Answer 12

The associations suggest that replacing SFAs with PUFAs rather than MUFAs or carbohydrates prevents CHD over a wide range of intakes.