Answer:
<u><em>Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs. </em></u>
<u><em>Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains.</em></u>
Explanation:
The correct answer is b, antigens
Answer:
oxygen , carbon , hydrogen , nitrogen , phosphorus , sulfur are some examples
The most important reason they are considered non living is because they cannot live and reproduce without the help of a host cell.
