| A | B |
| gene | instructions (code) for making one protein |
| mRNA | carries the instructions from the nucleus to the cytoplasm |
| ribosome | where proteins are synthesized |
| tRNA | carries amino acids to the ribosome |
| amino acid | what proteins are made of |
| enzyme | bonds amino acids together to make protein |
| protein | enzymes and antibodies are examples |
| nucleus | DNA never leaves here |
| three | number of nitrogen bases in one tRNA |
| hundreds to thousands | number of nitrogen bases in one mRNA |
| thousands to millions | number of nitrogen bases in one DNA |
| transcription | copying of code from DNA to mRNA in nucleus |
| translation | matching of tRNA with mRNA to produce protein in cytoplasm |