| A | B |
| the sum of all reactions (life processes) that occur within a living organism | metabolism |
| a triplet of nucleotides that forms the code for a particular amino acid on messenger RNA | codon |
| the molecule that carries the code from the DNA in the nucleus for making a polypeptide chain (protein) out in the cytoplasm | messenger RNA |
| the molecule that carries in a specific amino acid to the ribosome during the process of protein synthesis | transfer RNA |
| the triplet of nucleotides on transfer RNA that will pair with the codon of the messenger RNA to line up amino acids during protein synthesis | anticodon |
| the molecule that combines with proteins to form a ribosome | ribosomal RNA |
| a section of RNA that is kept when forming messenger RNA | exon |
| a section of RNA that is cut out when forming messenger RNA | intron |
| the process of manufacturing polypeptides | translation |
| the constructive part of metabolism in which molecules are built and energy is stored | anabolism |
| the destructive part of metabolism in which molecules are broken down and energy is released | catabolism |
| the breakdown of substances within cells | intracellular digestion |
| the breakdown of substances that occurs in spaces outside the cells such as those cells that line a stomach or intestine and secrete digestive enzymes | extracellular digestion |
| the process whereby a cell forms a membrane around some of its own cellular parts and digests them | autophagy |