Vitamins

Question 1

Antioxidant activity is an important function of which of the following vitamins?
B1
E
D
K

Answer 1

Vitamin E refers to a set of closely-related, lipid-soluble compounds that function as antioxidants. Additional possible functions of vitamin E are under investigation, but for the purposes of the MCAT it is primarily considered an antioxidant.

Question 2

Vitamin B1

Answer 2

Vitamin B1, or thiamine, is a coenzyme in metabolic processes involving amino acids and carbohydrates.

Question 3

Vitamin D

Answer 3

Vitamin D is a lipid-soluble molecule primarily involved in calcium metabolism.

Question 4

Vitamin K

Answer 4

Vitamin K refers to a group of closely-related molecules that contribute to blood coagulation and clotting.