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Ch 10 Sec 4
ch 10 sec 4
| Question | Answer |
|---|---|
| Ribonucleic Acid (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 Sythesis | the formation of proteins by using information contained in DNA and carried by mRNA |
| Ribose | a cell organelle composed of RNA and protein; the site of protein synthesis |
| Messenger RNA (mRNA) | messenger RNA, a single-stranded RNA molecule that encodes the information to make a protein |
| Ribosomal RNA (rRNA) | ribosomal RNA, an organelle that contains most of the RNA in the cell and that is responsible for ribosome function |
| Tranfer RNA (tRNA) | 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 |
| Condon | Each three-nuleotide sequence in a mRNA that encodes an amino acid or signifies a start or stops signal |
| anticodon | a region of tRNA that consists of three bases complementary to the codon of mRNA |
| Genome | the complete genetic material contained in an individual |