Chapter 1, Problem 4SC

Which of the following mechanisms could both be used by the body to increase body temperature if a person forgets a coat on a cold day? A. Superficial blood vessels dilate, and the thyroid decreases metabolism. B. Superficial blood vessels constrict, and the thyroid decreases metabolism. C. Superficial blood vessels dilate, and the thyroid increases metabolism. D. Superficial blood vessels constrict, and the thyroid increases metabolism.

The preferred energy sources for the body are ________.

In a popular magazine article the author reports health benefits attributed to a particular dietary supplement. What kinds of evidence should the article cite to help you decide whether the information is likely to be accurate?

When faced with a sudden drop in environmental temperature, an endothermic animal will _______. a. experience a drop in its body temperature b. wait to see if it goes lower c. increase muscle activity to generate heat d. add fur or fat to increase insulation

Diabetes mellitus is a disease characterized by the: a. inadequate production of insulin in the body. b. rapid break down of carbohydrates in the body. c. excessive movement of blood glucose into various body cells. d. failure of the body to produce ketones

Which statement best summarizes the steps are involved before sugar is able to enter the bloodstream? (a) food is mechanically and chemically broken down until it becomes oxygen in the blood stream until we chemically break oxygen away from it to get energy we can use (b) we mechanically break down food until it turns into sugar and enters the bloodstream and can be broken down for energy we can use (c) food and oxygen are broken down by the digestive system and they’re chemically combined to make sugar, which we can use as energy (d) food is mechanically and chemically broken down until nutrients enter the bloodstream and can be combined with oxygen to create energy we can use

Which of the following are substances in plant foods that are not absorbed by the body? A. Simple sugars B. Disaccharides C. Starch D. Dietary fiber