Question

in which of the following circumstances would you expect someone to be in positive nitrogen balance?
a starvation
b serious injury
c pregnancy
d illness

Explanation:

Positive nitrogen balance occurs when nitrogen intake exceeds nitrogen output. Pregnancy is a state where the body is building new tissues (such as the growing fetus, increased maternal blood volume, and uterine tissue growth), which requires more protein (a source of nitrogen). In contrast, starvation (A) leads to negative nitrogen balance as the body breaks down muscle for energy. Serious injury (B) and illness (D) often lead to negative nitrogen balance due to increased protein breakdown for healing and the body's stress response.

Answer:

C. Pregnancy