Chapter 14

The first vitamin that was identified due to a disorder in humans, causing beriberi, is a. Pantothenic acid b. Thiamin c. Riboflavin d. Niacin

Which amino acid can form the vitamin niacin? a. Threonine b. Methionine c. Tryptophan d. Tyrosine

What vitamins are involved in the transfer of carbon units and cell replication (DNA synthesis)?

Dogs, mink, foxes, or cats fed raw fish can become deficient in this B vitamin. a. Thiamin b. Riboflavin c. Biotin d. Niacin

The vitamin that functions as a coenzyme in protein and \(\mathrm{N}\) metabolism is a. \(\operatorname{Vitamin} \mathrm{E}\) b. Pyridoxine (vitamin B6) c. \(\operatorname{Vitamin} C\)

Which vitamin is involved in collagen and neurotransmitter synthesis and is also an antioxidant?

A lack of cobalt in the diet of a ruminant animal will lead to a deficiency of this vitamin. a. \(\quad\) Vitamin \(\mathrm{K}\) b. Vitamin B12 c. Vitamin B6 d. Niacin

What are the coenzymes/cofactors for riboflavin, niacin, and pantothenic acid?

The vitamins that function as coenzymes in energy metabolism are a. Thiamin, riboflavin b. Pyridoxal phosphate (vitamin B6), vitamin A c. Vitamin \(D,\) vitamin \(\mathrm{A}\) d. Vitamin \(\mathrm{E},\) vitamin \(\mathrm{A}\)

A vitamin that functions in the metabolism of volatile fatty acids in ruminants. a. Vitamin B6 b. Vitamin B12 c. \(\operatorname{Vitamin} C\) d. Niacin

An experimental drug added to animal diets has been shown to inhibit the functions of coenzyme \(A\) and make it unavailable to facilitate energy metabolism in the animal. Which one of these vitamins is an integral part of coenzyme \(\mathrm{A} ?\) a. Pantothenic acid b. Niacin c. Riboflavin d. Thiamin

Niacin is a vitamin that was discovered in the search for the cause of pellagra, a skin dermatitis found in humans. Which amino acid can form niacin? a. Threonine b. Taurine c. Tryptophan d. Tyrosine