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7 Cards in this Set
- Front
- Back
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Nameand state the function of five enzymes involved in DNA replication,transcription or translation?
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*DNA polymerase- matches existing DNA bases with complementary nucleotides and links them *DNA ligase- fixes single stranded breaks *Topoisomerase- prevents super coiling *Helicase- unwinds the DNA *Primase- makes the RNA primer |
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Draw the basic structure of a nucleotide
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Defineexcision repair and state the three steps of the process.
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Damaged region is removed and replaced by DNA synthesis 3 Steps: 1-recognition of damaged 2-removal of the damaged region 3-resynthesis using the information on the undamaged strand as a template |
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Name,and state the function of the three major types of RNA molecules
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*Messenger RNA- contains the genetic info for building a protein *Transfer RNA- carries amino acids to the ribosomes *Ribosomal RNA- major components of the ribosomes= builds proteins |
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What are telomeres?
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specialized structures found at the end of eukaryotic chromosomes. *repeating sequence |
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3 things DNA replication requires
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*something to copy- parental DNA molecule *something to do the copying- enzymes *building clocks to make the copy- nucleotide triphosphates |
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DNA replication includes
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*Initiation- replication begins *Elongation- new strands of DNA are synthesized by DNA polymerase *Termination- replication is terminated |
