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Chapter10Section4
| Question | Answer |
|---|---|
| RNA | Ribonucleic acid, a natural polymer that is present in all living cells and that plays a role in protein synthesis |
| Transcription | The process of forming a nucleic acid by using another molecule as a template; particularly the process of synthesizing RNA by using one strand of a DNA molecule as a template |
| Translation | The portion of protein synthesis that takes place at ribosomes and that uses the codons in mRNA molecules to specify the sequence of amino acids in polypeptide chains |
| Protein Synthesis | The formation of proteins by using information contained in DNA and carried by mRNA |
| Ribose | A five-carbon sugar present in RNA |
| Messenger RNA | Messenger RNA, a single-stranded RNA molecule that encodes the information to make a protein |
| Ribosomal RNA | Ribosomal RNA, an organelle that contains most of the RNA in the cell and that is responsible for ribosome function |
| Transfer RNA | An RNA molecule that transfers amino acids to the growing end of a polypeptide chain during translation |
| RNA Polymerase | An enzyme that starts (catalyzes) the formation of RNA by using a strand of a DNA molecule as a template |
| Promoter | A nucleotide sequence on a DNA molecule to which an RNA polymerase molecule binds, which initiates the transcription of a specific gene |
| Termination Signal | A specific sequence of nucleotides that marks the end of a gene |
| Genetic Code | The rule that describes how a sequence of nucleotides, read in groups of three consecutive nucleotides (triplets) that correspond to specific amino acids, specifies the amino acid sequence of a protein |
| Codon | In DNA, a three-nucleotide sequence that encodes an amino acid or signifies a start signal or a stop signal |
| Anitcodon | A region of tRNA that consists of three bases complementary to the codon of mRNA |
| Genome | The complete genetic material contained in an individual |