Question

How many methods of lock and key should counselors use to safeguard records?

a) One
b) Two
c) Three
d) Four

Answer 1

The correct answer is three. Three "letters" of an RNA molecule, in sequence, are needed to provide the code for a single amino acid.

Step-by-step explanation:

The correct answer is c) three.

Three "letters" of an RNA molecule, in sequence, are needed to provide the code for a single amino acid. These sequences are called codons, and each codon consists of three nitrogenous bases. The sequence of codons determines the sequence of amino acids in a protein.