What do polysaccharides and proteins have in common? A. They both have a carboxyl group.

B. They are both composed of repeating units.

C. They both have nitrogen.

D. They are both found in DNA.

As a small change in a person's dna can cause a genetic disorder

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.