21) The macronutrient with the highest satiety value is protein.

22) The atom is the smallest unit of matter that exhibits the properties of growth, reproduction, and metabolism.

23) Tiny units of matter that cannot be broken down by natural means are called cells.

24) A tissue is a functional grouping of similar cells that are joined together to form functional sheets or cords of cells.

25) Tight rings of muscles that control the movement of food through the organs of the gastrointestinal tract are villi.

26) The human GI tract is approximately 30 feet long.

Nutrition Debate Questions

1) A body of evidence strongly suggests that colon cleansing using a colonic is necessary for good health.

2) According to many physicians, the primary danger of colon cleansing regimes is dehydration.

Questions from Chapter Boxes

1) Which of the following foods or beverages is considered safe to consume when traveling to high-risk foreign destinations?

A) ice made from tap water

B) coffee and tea

C) salads and lettuce

D) refrigerated shellfish

2) What is the primary cause of peptic ulcers?

A) stress

B) Helicobacter pylori bacteria

C) prolonged use of aspirin

D) eating too many spicy foods