Font size
WorksheetsIB 7.2 Transcription
Total questions: 30
Worksheet time: 15mins
What is the enzyme involved in the removal of the non-coding sequence and ligating of the coding sequence on mRNA?
RNA ligase
DNA ligase
Spliceosome
RNA polymerase
What transcription factors are involved in regulation of transcription? (choose all options that apply)
Activator protein
Repressor protein
Silencer sequence
Coding sequence
What is placed on the 3' of the mRNA transcript?
Poly-A tail
Methyl cap
What is placed on the 5' end of the mRNA transcript?
Poly-A tail
Methyl cap
(a) is the process by which a gene is copied into a complementary RNA sequence
List the 3 steps involved in transcription
What enzyme is involved in transcription?
RNA primase
RNA polymerase
RNAase
RNA polymerase I
Transcription and translation in prokaryotes are not different to that in eukaryotes
True
False
There are sequences on RNA that are not translated to tRNA
True
False
What strand does transcription occur on?
Sense strand
Antisense strand
mRNA strand
Unmentioned strand
A difference between RNA and DNA is....
R replaces D on RNA strand
T replaces U on RNA strand
DNA is a multi-helix
Deoxyribose is found on DNA
Promoter is...(choose all options that apply)
part of the codon
non-coding sequence
a binding site for RNA polymerase
transcribed to tRNA
Elongation in transcription happens in what direction?
3' → 5'
5' → 3'
Deacetylation occurs in:
I. eukaryotes only
II. prokaryotes only
III. eukaryotes and prokaryotes
II
III
I
IV
The study of changes in phenotypes as a result of variations in gene expression levels
Molecular biology
Mutation
Epigenetics
STING
What is the purpose of transcription factors?
Can exons be removed from the mRNA template ?
Yes
No
What is alternate splicing?
The ribonucleoside triphosphates use energy from the breaking of the bonds of two of the phosphate groups to gain energy to form the phosphodiester bond, a process known as
hydrolysis
condensation
Telomeres are the ends of chromosomes that contains highly repetitive DNA sequences. The purpose of these regions are
to protect the DNA molecule from degradation during replication.
to increase the rate of transcription.
to edit out non-coding regions of DNA.
An example of something impacted by environment is
human skin color
human hair color
pigment in the fur of Himalayan rabbits
All of the above
What is the name of the key chemical group that can be added to DNA to inhibit transcription?
Methyl group
Acetyl group
Study group
Phosphate group
Alternative splicing of mRNA
increases the number of different proteins an organism can produce.
decreases the number of different proteins an organism can produce.
What is the name of the key chemical group that can be added to histone proteins to promote transcription?
Methyl groups
Acetyl groups
Phosphate groups
Study groups
Which region of DNA is edited out of mRNA and recycled into nucleotides?
Introns
Exons
________ binds to _______ to decrease the rate of transcription
(a)
Transcription factors are bound to proximal elements
True
False
What is the name of the enzyme that the methyl cap protects the mature mRNA from?
Endonucleases
Exonuclauses
Methylase
Exonucleases
Transcription and translation happen concurrently in eukaryotes
True
False
Can mutation affect transcription?
Yes
No
