In nutrition, calories are (select all that apply):

a. units of weight.

b. a units of energy.

c. most densely packed in carbohydrates.

d. most densely packed in lipids.

e. optional components of human nutrition.

Unprocessed carbohydrates generally have the advantage of providing a relatively (select all that apply):

a. low glycemic load.

b. high amount of fiber.

c. high glycemic load.

d. low amount of fiber.

e. large array of vitamins and minerals.

Saturated fats (select all that apply):

a. lower circulating LDL levels.

b. raise circulating LDL levels.

c. are supplied mostly by animal sources.

d. are supplied mostly by plant sources.

e. lower the risk of coronary heart disease.

In addition to filtering waste from the body, what are two other critical functions of the kidneys?

a. storage of blood, distribution of nutrients

b. production of urea, production of hemoglobin

c. regulation of blood volume, conservation of useful materials

d. production of hemoglobin, channeling of lymphatic fluid

e. storage of nutrients, regulation of digestive system

The two central functions of respiration are capturing and distributing _______ and disposing of _______.

The air-exchange chambers of the lungs are tiny sacs called _______, which are surrounded by _______.

Oxygen binds with the molecule called _______ inside _______.

A heart attack can be defined as a complete _______ of a _______.

High-density lipoproteins are regarded as healthy because they carry cholesterol _______.

_______ are the delivery vessels of the car diovascular system.

There are two networks of blood vessels in the body. In one of these, the pulmonary circulation, blood flows between the _______. In the other, the systemic circulation, blood flows between the _______.