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12 Cards in this Set
- Front
- Back
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What are the two main steps in protein synthesis?
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Transcription and translation
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What does DNA do?
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DNA gets copied to be able to make a new protein (gives instructions)
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What does mRNA do?
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carries instructions from DNA to ribosomes
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What does rRNA do?
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assembles the proteins
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What does tRNA do?
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it transfers amino acids to the ribosomes so proteins can be assembled
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What enzyme unzips DNA?
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Helicase
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What happens in transcription?
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a gene is copied from a DNA strand into a complimentary strand of mRNA
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What happens in translation?
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proteins are built by decoding the mRNA
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Describe protein synthesis.
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first, helicase unzips DNA.
then, during transcription a gene is transcribed into codon then the codon attaches to a ribosme, where translation occurs. there, each codon of mRNA is separated into triplets. then the triplets are made into anticodons. then, the triplets are used to determine the amino acid sequence (polypeptides) for each mRNA |
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What are the nitrogen bases for DNA & RNA?
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DNA - thymine
RNA - uracil |
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Three differences between DNA and RNA?
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1. RNA has ribosme sugar instead of deoxyribose sugar
2. RNA is single stranded 3. RNA nucleotides have a uracil base instead of a thymine base (like DNA) |
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DNA is the blueprint for making __________.
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life
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