The sodium-potassium pump transports potassium to the inside of the cell.

The food label of a grain product can include a claim that the product may reduce the risk of heart disease, if the grain product is low in fat and contains certain types of:

Vitamin B12 is also called ___.

During starvation, the body’s highest priority is:

Hydrochloric acid aids protein digestion in the stomach.

An epidemiologic study found that individuals who consume a high saturated fat diet were more likely to develop cardiovascular disease. Therefore, it is reasonable to conclude that consuming a high saturated fate diet causes cardiovascular disease.

Which is not a function of fat in the body?

The body can form _____ by exposure to sunlight.

An inflamed tongue is a sign of:

Figure 19.3   Darwin viewed the history of life as a tree, with multiple branchings from a common trunk to the tips of the twigs. Which part of that tree represents extant organisms?