Which statement about vitamins is true?

Question

Quizplus · Accepted Answer

Vitamins are required in much smaller amounts than macronutrients such as essential amino acids and fatty acids. This is because they act as coenzymes, which means they help enzymes carry out their metabolic functions. The specific types and amounts of vitamins required vary among species. Some animals can synthesize their own vitamins, while others require them from their diet. Humans require 13 different vitamins, not 20. When taken in excess, fat-soluble vitamins can accumulate in fat and reach toxic levels, while water-soluble vitamins are excreted in urine if taken in excess.

Which Statement About Vitamins Is True