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[Show more]CMB2001 – 9 Exam Questions With 
Verified Answers. 
21 - answerhow many proteins are in small subunit of the 70S ribosome 
33 - answerhow many proteins are in small subunit of the 80S ribosome 
31 - answerhow many proteins are in large subunit of the 70S ribosome 
50 - answerhow many proteins are ...
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Verified Answers. 
21 - answerhow many proteins are in small subunit of the 70S ribosome 
33 - answerhow many proteins are in small subunit of the 80S ribosome 
31 - answerhow many proteins are in large subunit of the 70S ribosome 
50 - answerhow many proteins are ...
CMB2001 Exam Questions With 
Verified Answers 
Why does RNA degradation take place? - answerDamaged mRNA 
Incorrectly transcribed/processed mRNA 
Control gene expression 
What 2 things control mRNA levels? - answerTranscription and turnover 
Why is turnover important? - answerIf mRNA has a ridiculou...
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Why does RNA degradation take place? - answerDamaged mRNA 
Incorrectly transcribed/processed mRNA 
Control gene expression 
What 2 things control mRNA levels? - answerTranscription and turnover 
Why is turnover important? - answerIf mRNA has a ridiculou...
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CMB2001 Exam Questions With Verified 
Answers. 
Describe how H3Lys9me heterochromatin is formed - answerH3Lys9me heterochromatin 
formation: Lys9 deacetylated by HDAC. Suvar39 then methylates lys9. Methylated lys9 is 
recognised by HP1 and then HP1 binds. HP1 has chromodomain ...
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CMB2001 Exam Questions With Verified 
Answers. 
Describe how H3Lys9me heterochromatin is formed - answerH3Lys9me heterochromatin 
formation: Lys9 deacetylated by HDAC. Suvar39 then methylates lys9. Methylated lys9 is 
recognised by HP1 and then HP1 binds. HP1 has chromodomain ...
CMB2001 Exam Questions With Verified 
Answers. 
Core Promoter Elements - answerTATA box = repetitive sequence of thymine and adenine 
Initiator (INR) = sequence of pyramidines like thymine and cytosine 
DPE = downstream promoter elements found along the DNA 
Common to have >1 promoter but not all...
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Answers. 
Core Promoter Elements - answerTATA box = repetitive sequence of thymine and adenine 
Initiator (INR) = sequence of pyramidines like thymine and cytosine 
DPE = downstream promoter elements found along the DNA 
Common to have >1 promoter but not all...
CMB2001 Exam Questions With Verified 
Answers 
In prokaryotes RNA polymerase requires what co-factor? - answer70 sigma factor 
Forms the holoenzyme 
The promoter is formed of two hexameric sequences at what positions? - answer-35 and -10 
The amount of product transcribed is dependant on how close t...
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Answers 
In prokaryotes RNA polymerase requires what co-factor? - answer70 sigma factor 
Forms the holoenzyme 
The promoter is formed of two hexameric sequences at what positions? - answer-35 and -10 
The amount of product transcribed is dependant on how close t...
CMB2001 Exam Questions With Verified 
Answers. 
What is gene expression? - answerdsDNA is decoded to ssRNA/proteins by an mRNA 
intermediate using A/U/C/GTPs and RNA polymerase 
Where is the consensus sequence in prokaryotic promoters? - answerat -10 and -35 upstream 
of the the transcription start ...
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Answers. 
What is gene expression? - answerdsDNA is decoded to ssRNA/proteins by an mRNA 
intermediate using A/U/C/GTPs and RNA polymerase 
Where is the consensus sequence in prokaryotic promoters? - answerat -10 and -35 upstream 
of the the transcription start ...
CMB2001 Exam Questions With 
Verified Answers 
What is a promoter? - answerDNA sequence which RNA polymerase can bind to and 
transcribe the protein 
Prokaryotic promoters - answerTATAAT -(10 region) 'Pribnow box' 
TTGACA - (-35 region) 
- two consensus sequences 
Prokaryotic RNA polymerase - answ...
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Add to cartCMB2001 Exam Questions With 
Verified Answers 
What is a promoter? - answerDNA sequence which RNA polymerase can bind to and 
transcribe the protein 
Prokaryotic promoters - answerTATAAT -(10 region) 'Pribnow box' 
TTGACA - (-35 region) 
- two consensus sequences 
Prokaryotic RNA polymerase - answ...
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