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chapter 8 vocab
DNA and GENES
| Term | Definition |
|---|---|
| nucleotides | small unit that make up DNA. |
| double helix | model in which 2 strands of DNA wind around like a twisted latter |
| base pairing rules | the base of the 2 DNA strands |
| replication | DNA is copied during the cell cycle |
| DNA polymerases | bond the new nucleotides together |
| central dodma | molecular biology, which states the information flows in one direction |
| RNA | is a chain of nucleotides, each made of sugar, a phosphate group, aand a nitrogen - containing base |
| transcription | is the process of copying a sequence |
| RNA polymerases | enzymes that bod nucleotides together in a chain to make a new molecule |
| Messenger RNA | is an intermediate message that is translated to form a protein |
| Ribosomal RNA | forms part of ribosomes, a cells protein factories |
| Transfer RNA | brings amino acids from the cytoplasm to a ribosome to help make the growing protein |
| Translation | is the process that coverts , or translate, an mRNA message into a polypeptide |
| Stop Condons | signal the end of the amino acid chain |
| Start Condon | which signals the start of translation and the amino acid methionine |
| anticondon | is a set of three nucleotides that is complmentary to an mRNA condon |