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15 Cards in this Set
- Front
- Back
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What is the function of RNA?
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To carry out the work on the DNA blueprint.
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What are the three types of RNA?
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Messenger RNA (mRNA)
Transfer RNA (tRNA) Ribosomal RNA (rRNA) |
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What is the job of mRNA?
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carry the blueprint for protein synthesis
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What is the process of copying a segment of DNA and creating RNA?
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Transcription
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What is the enzyme that synthesizes RNA?
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RNA polymerase
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What is the beginning segment of DNA that signals the beginning of a gene sequence?
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Promoter
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What is the segment of DNA that signals the end of a gene sequence?
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Termination Signal
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What happens to the DNA strand when RNA polymerase finds and binds to the promoter?
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It uncoils at the gene segment
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How does the RNA get prepared to leave the nucleus?
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It gets a cap and a tail to protect it from enzymes and other damage
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What must happen to RNA if it is going to synthesize proteins?
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The RNA must be turned into mRNA
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What are the two types of genetic code on the RNA strand?
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Exons and Introns
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What are the sections of RNA that have importnat Information?
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Exons
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What are the sections of RNA that have unimportant (junk)information?
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Introns
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What happens to the introns that have been discarded?
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They are disassembled back into free nucleotides
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Does RNA always use all of the Exons when it turns into mRNA?
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No, it sometimes takes only a part of each, which creates new proteins.
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