Fat-Soluble Vitamins Review ?s

Question 1

The active form of vitamin A is called ____.

Answer 1

Retinoic acid and retinol

Question 2

The form of Vitamin A involved with the formation of rhodopsin (needed for vision) is _______.

Answer 2

1,1-cis-retinal

Question 3

The enzyme that esterifies a fatty acid onto a CRBPII is ____.

Answer 3

LRAT

Question 4

Name a carotenoid that has pro-vitamin A activity _____.

Answer 4

Beta-carotene

Question 5

Vitamin D is activated in the _____.

Answer 5

Kidney

Question 6

The new RDA values for Vitamin D were based on what assumption?

Answer 6

We do not get any vitamin D from the sun

Question 7

Vitamin D is transported in the body by _____.

Answer 7

Vitamin D binding protein

Question 8

Active Vitamin D (increases or decreases) the synthesis and secretion of parathyroid hormone.

Answer 8

Decreases

Question 9

The only natural form of tocopherol has the _____ configuration.

Answer 9

RRR

Question 10

The carrier protein for tocopherol is called ______.

Answer 10

TTP

Question 11

Tocopherols (are/are not) discriminated by the intestine.

Answer 11

are not

Question 12

Tocopherols (are/are not) discriminated by the liver.

Answer 12

Are

Question 13

Vitamin K has only one known function: to convert specific _____ residues to ______ in specific proteins. An example of a vitamin k-dependent protein is ______.

Answer 13

• GLU to GLA

- Prothombrin

Question 14

Vitamin K recycling is necessary because ________.

Answer 14

We excrete more than we intake

Question 15

Persons taking warfarin-like compounds must _______.

Answer 15

Avoid supplements and keep a consistent intake of dietary Vitamin K