Vitamin E

Question 1

From chylomicrons, ________ is transferred to other lipoproteins

Answer 1

tocopherol

Question 2

What lipoprotein contains highest concentration of tocopherol

Answer 2

LDL

Question 3

Chylomicron remnants deliver ?

Answer 3

all isomers to liver

Question 4

•Only α-tocopherol is transferred to what lipoprotein?

By what?

Answer 4

VLDL by α-tocopherol transfer protein (αTTP)

Question 5

α-tocopherol concentrations range between

Answer 5

5-20 μg/mL

Question 6

What are Vit E three primary roles

Answer 6

Antioxidant
•It prevents peroxidation of unsaturated fatty acids contained in the phospholipids of the membranes
•It destroys singlet molecular oxygen that originates from lipid peroxidation, respiration, photochemical reactions

Question 7

3 Tissues more susceptible to oxidative damage

Answer 7

–Lungs, brain, erythrocytes

Question 8

What is the most effective of all tocopherols for destroying singlet molecular oxygen

Answer 8

a-tocopherol

Question 9

•Lycopene and b-carotene are twice as effective as α-tocopherol in quenching ability but they are present in low amounts in plasma

Answer 9

K

Question 10

What transports vit C from enterocytes

Answer 10

chylomicrons