A scientist isolates a water-soluble compound from spider venom. The substance has nitrogen, carbon, hydrogen, and oxygen in its chemical structure. When the scientist injects the compound under the skin of mice, it causes certain structural materials in cell membranes to break down. In her next experiment, the researcher will determine whether the compound is toxic to humans. Based on this information, the compound is a

Which of the following groups of Americans has the highest risk of hypertension?

Pathogenic bacteria are likely to multiply rapidly when environmental temperatures are between

The _____ play a major role in regulating the body’s fluid balance.

According to the joint recommendations of an expert group that included the Academy of Nutrition and Dietetics, an endurance athlete who weighs 60 kg should consume at least _____ g of protein daily.

Which of the following nutrients is a major mineral?

In the United States, _____ are more likely to be overweight or obese than other adults.

Which of the following practices is the most reliable way of sanitizing impure water?

According to a national survey conducted in 2007 to 2008, about _____ % of American adults 20 to 74 years of age were either overweight or obese.

Perry’s ankles are so swollen, the elastic bands at the top of his socks leave impressions in his skin. The swelling is called