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chapter 8 vocab-bio
genes and dna
| Term | Definition |
|---|---|
| Bacteriophage | takes over a bacterium's genetic machinery and directs it to make more viruses |
| Nucleotides | the small units, or monomers, that makes up DNA |
| Double Helix | two strands of DNA wind around each other like a twisted latter |
| Base Pairing Rules | T always pairs with A and C always pairs with G |
| Replication | this process by which DNA is copied during the cell cycle |
| DNA Polymerases | a group of enzymes bond the new nucleotides together |
| Central Dogma | states that information flows in one direction, from DNA to RNA to protiens |
| RNA | ribonucleic acid, is the chain of nucleotides, each made of a sugar, a phosphate group, and a nitrogen base |
| Transcription | is the process of copying a sequence of DNA to produce a complementary strand of RNA |
| RNA Polymerase | enzymes that bond nucleotides together in a chain to make a new RNA molecule |
| Messenger RNA (mRNA) | is an intermediate message that is translated to form a protein |
| Ribosomal RNA (rRNA) | forms part of ribosomes, a cells protein factories |
| Transfer RNA (tRNA) | brings amino acids from the cytoplasm to a ribosome to help make the growing protein |
| Translation | is the process that converts or translates, an mRNA message into a polypeptide |
| Codon | a three nucleotide sequence that codes for an amino acid |
| Stop Codon | signal the end of the amino acid chain |
| Start Codon | which signals the start of translation and the amino acid methionine |
| Anticodon | is a set of three nucleotides that is complementary to an mRNA codon |