The Concentration of a Trace Essential Element in the Body

question 7

Multiple Choice

The concentration of a trace essential element in the body is typically in the range of ________ per gram of body mass.

• A)1   g to 1 mg
• B)1   g to 10 mg
• C)10   g to 10 mg
• D)10   g to 100 mg
• E)100   g to 100 mg

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Definitions:

Euglenoids

A group of mostly freshwater unicellular excavates that move by means of an anterior flagellum and are usually photosynthetic.

Coenocytic

Refers to a type of cell or organism that has multiple nuclei sharing a common cytoplasm, without being divided into individual cells.

Multiple Nuclei

A condition where a cell contains more than one nucleus, common in certain types of muscle cells and some fungal species.

Micronucleus

One or more smaller nuclei found, along with the macronucleus, in ciliates. The micronucleus is involved in sexual reproduction. Compare with macronucleus.