Certified Dietary Manager (CDM) Practice Exam

Trace minerals are defined as minerals needed in what quantity?

1. More than 300mg daily

2. Less than 100mg daily

3. Exactly 100mg daily

4. Only in very small amounts

The correct answer is: Less than 100mg daily

Trace minerals are defined as minerals that are required by the body in varying but generally very small amounts, typically less than 100 milligrams per day. These minerals, which include iron, zinc, copper, selenium, manganese, and others, play vital roles in various biochemical processes, including enzyme function, hormone regulation, and immune support. The significance of trace minerals lies in their essential functions despite their lower quantity requirement compared to macro-minerals, which are needed in larger amounts, such as calcium and magnesium. Understanding that trace minerals can significantly impact health even at minimal levels is crucial for dietary managers when planning and managing nutritional needs. The choice indicating that trace minerals are required only in very small amounts also reflects an accurate understanding of their definition, but it does not explicitly categorize the amount range like the correct response does. The options suggesting more than 300 mg, exactly 100 mg, or other higher amounts incorrectly imply that these minerals are on the same level in terms of dietary requirements compared to macro-minerals.