题目内容

________ refers to soft, inner section of a tooth.

A. Dentin
B. Enamel
C. Pulp
D. Gum

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________ is the chemical that speeds up reactions and helps digest foods.

A. Triglyceride
B. Amino acid
C. Enzyme
D. Chyme

________ means pigment released with bile.

A. Glycogen
Bilirubin
C. Melena
D. Albino

Hormone produced by endocrine cells of the pancreas is called ________.

A. insulin
B. amylase
C. lipase
D. glycogen

________ is rhythm-like contraction of the muscles in the walls of the gastrointestinal tract.

A. Deglutition
B. Mastication
C. Peristalsis
D. cytolysis