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Transcript
Write an essay explaining the process of transcription in the synthesis of a protein.
•
transcription occurs in the nucleus
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the DNA / Gene unzips by breaking weak hydrogen bonds between the bases
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ATP & Enzymes are involved
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this exposes the bases on the strands of DNA
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only one strand of the DNA is used
•
free RNA nucleotides enter the nucleus and bond to the DNA at the
complementary bases
•
bonding is
DNA RNA
A
U
T
A
C
G
G
C
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the RNA nucleotides now bond to form a strand called mRNA
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mRNA now breaks away and leaves the nucleus via the pores into the cytoplasm
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mRNA joins with the ribosomes on the RER
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Sequence of nucleotides (bases) on the DNA determines the sequence of mRNA
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base triplets on the mRNA are called the codons