A substance that works only on a specific class of nutrient is called a(n)

A triglyceride is a compound composed of

Chemicals that act as messengers are called

Dietary fiber is fermented by

Diets low in fiber may increase the risk of

Bacteria have a role with _____ in causing _____.

The enzyme that begins digestion of protein in the stomach is

Kwashiorkor is a type of malnutrition usually caused by

The protein found in muscles whose function is similar to that of hemoglobin in blood is

Nine of the 20 amino acids are considered essential because they