Date post: | 12-Jan-2016 |
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RNA 3 chemical differences between DNA
and RNA 1. Single strand 2. Sugar in RNA is ribose 3. Uracil (U) instead of thymine (T) “U R single”
Messenger RNA (mRNA)
RNA that transports information from DNA in the nucleus to the cell's cytoplasm
Ribosomal RNA (rRNA)
RNA that makes up the ribosomes; Clamps onto mRNA and Uses it’s information to assemble
amino acids in the correct order
Transcription
Process in the cell nucleus where enzymes make an RNA copy of a DNA strand
1. Enzymes unzip the molecule of DNA 2. RNA nucleotides pair with
complementary DNA nucleotides on a DNA strand
Transcription cont…
3. mRNA molecule breaks away as the DNA strands rejoin
mRNA leaves the nucleus and enters the cytoplasm