Types of RNA
Stages of Transcription: Intiation
Stages of Transcription: Elongation
Stages of Termination: Termination
mRNA Modifications in Eukaryotes
100
What are the four types of RNA?
The four types of RNA are mRNA, tRNA, rRNA and snRNA.
100
What is Initiation primarily composed of?
It is composed of protein-DNA complex.
100
How many strands of DNA template are transcribed during elongation?
Only one strand.
100
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100
Can transcription and translation occur simultaneously?
YES.
200
What is the function of mRNA?
The function of mRNA is to carry genetic code for protein.
200
When only one strand of the gene is transcribed this is called?
What is called coding/sense strand.
200
How many RNA molecules can be produced from one gene?
Approximately 100
200
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200
Is mRNA modified after it is transported to cytoplasm, or before?
BEFORE.
300
tRNA is located in the?
What is called the cytoplasm.
300
The second strand which is not coded for is called?
What is the NON-coding strand.
300
Which of the following is faster? When RNA polymerase catalyzes synthesis of RNA, or DNA polymerase catalyzes synthesis of DNA?
RNA polymerase catalyzes synthesis of RNA is faster.
300
How do you stop transcription?
Nucleotide sequences in template DNA serve as signal to stop transcription.
300
When it is stated that pre-mRNA --> mRNA, it means?
What is precursor --> Mature.
400
Where is miRNA located and what is it's cell type?
miRNA is located in the cytoplasm and is a Eukaryotic cell type.
400
What is the definition of RNA Polymerase?
It is the main enzyme to catalyze RNA from DNA template.
400
What is one flaw of RNA polymerase?
No proofreading function.
400
What happens when nucleotide sequences are reached?
They are de-attached from DNA strand.
400
Define 5'cap?
Modified form of G nucleotide; Added to 5’ end of an mRNA
500
What does the small interfering RNA trigger in the cytoplasm?
Triggers the degradation of other RNA molecules.
500
What si the definition of promoter region?
It is the nucleotides in DNA that indicates where RNA Polymerase should bind to initiate transcription.
500
What is the key to make more DNA/RNA?
MINIMIZE ERRORS !!
500
What happens when mRNA strand is released from transcription assembly ?
DNA double helix forms
500
Define the 3' Poly-A tail.
senses of A nucleotides added to the 3’ end of mRNA
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