Which of the following statements is true of the genetic code?
a. three-letter codons each specify one amino acid.
b. three-letter polypeptides each specify one nucleotide.
c. five-letter dna sequences each specify one rna molecule.
d. five-letter anticodons each specify one amino acid.

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

In which of the following relationships is one organism always benefited while the other organism is always harmed

What is the next step in the process after a substrate enters the active site of an enzyme