Which of the following best describes what DNA codes for in living organisms?

• A. The number of ribosomes in a cell
• B. The structure of cell membranes
• C. The sequence of amino acids in proteins
• D. The amount of energy produced by mitochondria

Answer: (C)

Verified step by step guidance

1. Understand that DNA contains genetic information in the form of sequences of nucleotides (A, T, C, G).
2. Recognize that this sequence of nucleotides is transcribed into messenger RNA (mRNA) during gene expression.
3. Know that the mRNA sequence is then translated into a sequence of amino acids, which fold to form proteins.
4. Recall that proteins are the molecules that perform most cellular functions and determine the structure and function of cells.
5. Conclude that DNA codes for the sequence of amino acids in proteins, which ultimately affects the traits and functions of living organisms.