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Prokaryotes Only

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btrinh's version from 2017-06-15 02:13

Section

Question Answer
DNA gyrase Supercoils genome
Telomeres? None
Genomesingle circular dsDNA
DefinitionNo membrane bound organelles
Chromatin?None- so no euchromatin or heterchromatin either
Histones? None
# of DNA polymerases Five
mRNA typepolycistronic - same mRNA molecule encodes more than one polypeptide
Post-transcription processing? None- RNA is not processed in prok so NO hnRNA
Ribosome size70s (vs. 80s in euk)
Large ribosomal subunit size50 s (vs. 60s in euk)
Small ribosomal subunit size30s (vs. 40s in euk)
PolyribosomesYes (both pro and euk)
5' UTR for translation Shine Dalgarno at -10 (vs. Kozak before AUG in euk)
1st amino acid fmet (vs. met in euk)
memorize