The body can form _____ by exposure to sunlight.

Signs of thiamin deficiency may appear with 2 weeks of eliminating the nutrient from the diet.

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?

Yeast produces alcohol in a process called ____.

Describe two techniques for measuring body composition.

The instrument used to measure the energy content of food is a:

Toxic effects of vitamins are more likely to occur in people taking ____ amounts.

The following metabolic changes are aerobic except:

All the following are functions of nutrients except