Question

In the term trace element, the adjective trace means that

(A) the element is required in very small amounts.

(B) the element can be used as a label to trace atoms through an organism’s metabolism.

(C) the element is very rare on Earth.

(D) the element enhances health but is not essential for the organism’s long-term survival.

Short answer

(A) The statement “The element is required in very small amounts” is true.

(B) The statement “thee element can be used as a label to trace atoms through an organism’s metabolism” is false.

(C) The statement “the element is very rare on Earth” is false.

(D) The statement “the element enhances health but is not essential for the organism’s long-term survival” is false.

Step-by-step solution

Elements

In chemistry, there are a variety of chemical substances required for the normal functioning of life. Trace elements are one of the important substances in this category.

Explanation of option ‘(A)’

The word trace is given as an adjective to elements since these elements are required in a smaller amount. The biological system requires the help of these trace elements for its proper metabolism and functioning.

Thus, the word trace refers to the minimal quantity.

Therefore, the given statement is true.

Explanation of option ‘(B)’

There are no elements that can be used to predict the trace atoms via biological metabolism. These kinds of predictions are not made with trace elements.

Thus, trace elements are not meant to trace any other element within the body.

Therefore, the given statement is false.

Explanation of option ‘(C)’

Trace elements are not the rare elements that are present on the Earth. These elements are required by the biological system in a minimal amount. There are rare elements found on the Earth in a minimal amount. An example is a cerium, which is not a trace element.

Thus, the trace elements are commonly present on Earth but required in small quantities.

Therefore, the given statement is false.

Explanation of option ‘(D)’

Trace elements are required in critical metabolic processes to ensure long-term survival and health. For example, iron is a trace element, but it is the most important substance to transport oxygen to different body parts.

Thus, trace elements are required for the long-term survival of the organism.

Therefore, the given statement is false.