Digestive System

Question 1

Mechanical Digestion

Answer 1

The physical act of breaking down the food by non-chemical means

Question 2

Chemical Digestion

Answer 2

The breakdown of food in the mouth, stomach, and small intestine through the use of acids and enzymes

Question 3

Enzymes

Answer 3

A substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction

Question 4

Villi

Answer 4

Any of the fingerlike or threadlike projections from the surface of certain membranous structures, typically serving to increase surface area and facilitate the passage of fluid or nutrients.

Question 5

Peristalsis

Answer 5

The involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements that push the contents of the canal forward.

Question 6

Macromolecule

Answer 6

A molecule containing a very large number of atoms, such as a protein, nucleic acid, or synthetic polymer.

Question 7

Monomer

Answer 7

A molecule that can be bonded to other identical molecules to form a polymer.

Question 8

Polymer

Answer 8

A substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together, e.g., many synthetic organic materials used as plastics and resins.