Lecture 4/15/16

Question 1

Function of vitamin E

Answer 1

antioxidant

Question 2

Deficiency of Vitamin E

Answer 2

Myopathy, anemia, neuropathy

Question 3

Sources of Vit. E

Answer 3

vegetable Seeds and oils

Question 4

All-rac-a-tocopherol

Answer 4

Rac = racemic; all 8 forms of tocopherols are present in a sample; also known as all-d-tocopherol

Question 5

What is the difference between tocopherols and tocotrienols?

Answer 5

Tocopherols do not have DB; tocotrienols do; differences in a,b,g are the R groups in the ring

Question 6

How is Vit E. Absorbed?

Answer 6

Bile acids uptake Vit E; absorbed primarily in the jejunum by passive diffusion or active transport by (SR-B1) in peripheral tissues

Question 7

SR-BL

Answer 7

involved in HDL metabolism; also responsible for the uptake of Vitamin E in peripheral tissues;

Question 8

What is the most active form of Vitamin E (anti-oxidant properties)?

Answer 8

a-tocopherol

Question 9

Even though vitamin K is produced by colonic bacteria and absorbed passively in the colon, bacterial synthesis is not sufficient to meet the needs of children or adults? (T/F)

Answer 9

T

Question 10

Individuals on anti-coagulant medication coumadin are instructed to avoid consumption of large quantities of vit. K rich foods, such as spinach, collards, turnip greens, or broccoli. (T/F)

Answer 10

T