Cell Biology 2S.2

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Central Dogma
DNA-RNA-PROTEIN
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Are introns or exons expressed?
Exons
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How many different types of RNA polymerase are there?
3
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RNA polymerase ll
most protein transcripts
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RNA polymerase l
most rRNA
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RNA polymerase lll
most tRNA transcripts
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Differential splicing
generates variant mRNA sequences from a single gene
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Polytene
multiple DNA copies of the same chromosome bunched up
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Translation allows
protein synthesis, conserved genetic code,tRNA coupled to specific amino acid, activation of amino acids with ATP
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Outline of transcription
DNA in nucleus, mRNA copy made using template strand, mRNA leaves nucleus, goes to a ribosome
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Outline of translation
mRNA attaches to ribosome, tRNA bring amino acids to ribsome, amino acid chain is created depending on the mRNA code, sequence of amino acid same as template strand
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What enzyme unwinds the double helix
DNA helicase
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What bonds are broken between the DNA bases?
Hydrogen
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What bonds are found in proteins?
peptide
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what bonds are found in lipids
ester
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what bonds are found in carbohydrates
gycosidic
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what is the start codon
AUG
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what does universal mean
codons are the same for every organism
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what does non-overlapping mean
Each base is only used in one code
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what does degenerate mean
The same amino acids can be produced from different codons
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How many possible reading frames are there on a DNA double-helix strand?
6
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Other cards in this set

Card 2

Front

Are introns or exons expressed?

Back

Exons

Card 3

Front

How many different types of RNA polymerase are there?

Back

Preview of the front of card 3

Card 4

Front

RNA polymerase ll

Back

Preview of the front of card 4

Card 5

Front

RNA polymerase l

Back

Preview of the front of card 5
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