HN 2310 Chapter 12

Some vitamins have overlapping functions in the body, while others have distinct functions. Match the vitamin with its unique property:

A - important for vision D - is a hormone E - is an antioxidant K - activates blood clotting factors

A high intake of Vitamin E can

interfere with vitamin K's blood-clotting activity

Megadoses of vitamins are useful in preventing nutritional deficiencies and decreasing disease risk.

False

Determine whether each label describes water-soluble or fat-soluble vitamins.

Fat-soluble: Vitamins A, D, E, and K; mostly stored in liver and fatty tissues; travel with dietary fats through bloodstream Water-soluble: Vitamins B and C; readily excreted from body; easily lost during food processing and preparation

Antibiotics and intestinal diseases can interfere with absorption of vitamin

K

Nutrients most likely to cause toxicity if consumed in excessive amounts include

Vitamins A and D

Of the following, the best source of provitamin A is

baked sweet potato

The main active form of vitamin D in the body is

calcitriol

Which vitamin deficiency leads to hemolytic anemia?

vitamin E (vitamin K toxicity also leads to hemolytic anemia)