Question

which of the following is a characteristic of trace minerals?
select one
a a deficiency sign common to many trace minerals is dermatitis
b the amounts in foods are dependent, in part, on soil composition
c deficiencies are more difficult to recognize in children than in adults
d the amount of all trace minerals in the average person totals approximately 100 grams
e they function independently in the body

Explanation:

To determine the characteristic of trace minerals, we analyze each option:

• Option A: Dermatitis as a common deficiency sign is not a defining characteristic of trace minerals (macrominerals can also have deficiency signs).
• Option B: Trace mineral amounts in foods depend on soil composition (e.g., selenium in soil affects its presence in crops), which is a key characteristic.
• Option C: Deficiency recognition difficulty isn't unique to trace minerals (varies by nutrient).
• Option D: Total trace minerals in a person are much less than 100 grams (trace minerals are needed in very small amounts).
• Option E: Trace minerals do not function independently; they interact with other nutrients.

Answer:

B. The amounts in foods are dependent, in part, on soil composition