Molecular Biology CE I

A detailed illustration of DNA structure and replication process, showcasing the molecular interactions during the replication fork, with elements representing proteins and enzymes involved in molecular biology.

Molecular Biology CE I Quiz

Test your knowledge of molecular biology with our comprehensive quiz designed for students and enthusiasts alike. This quiz covers a wide range of topics including DNA replication, transcription, and repair mechanisms.

  • 18 multiple choice questions
  • Score each question correctly for a better understanding
  • Ideal for students, educators, or anyone interested in molecular biology
18 Questions4 MinutesCreated by LearningGene42
Chromatin is composed of
DNA, RNA and proteins
DNA and proteins
DNA
None of them
Which of the following histones bind to linker DNA?
H1
H2A
H3
H4
Telomerase,a RNA-protein complex which completes the replication of telomeres during DNA synthesis, is a specialized
RNA dependent DNA polymerase
DNA dependent RNA polymerase
RNA dependent RNA polymerase
All of them
The combination of all the proteins that function at the replication fork is referred to as
Replicon
Replisome
Replica
Replicating unit
Select the statement which correctly describes the enzymatic acitivity of DNA pol I
The polymerase synthesize DNA in 3' to 5' direction
The RNA primer nucleotides are removed by the 5' to 3' exonuclease
The 3' to 5' exonuclease extends the 3' end of the parent strand nucleotides
The 3' to 5' exonuclease replaces the RNA primer with deoxynucleotides.
During DNA replication, events at the replication fork requires different types of enzymes having specialized function except
DNA polymerase III
DNA gyrase
DNA ligase
DNA glycosylase
Given below are four statements about eukaryotic DNA replication. Which one is true?    
Both leading and lagging strands are synthesized by DNA polymerase Alpha.
Entire leading and lagging strands are synthesized by polymerase Epsilon and Delta
Primers for both the strands are synthesized by DNA polymerase Alpha followed by switching with polymerase Epsilon and Delta
Primers for both the strands are synthesized by DNA polymerase Alpha followed for switching with polymerase Gamma
Leaving group for the first reaction of DNA synthesis is_________
Inorganic phosphate
Pyrophosphate
Triphosphate
None of them
Predict the enzyme of Escherichia coli which is involved in branch migration during homologous recombination
Rec A
Rec BCD
Ruv B
Ruv C
If E.coli cells carry mutation in Ruv ABC gene, which of the function is going to hamper
Homologous strand exchange
Resolution of Holiday junction
Making of Holiday junction
None of them
Insertion sequences are not present in
IS elements
Composite transposons
Non composite transposons
None
Select what type of DNA modification enables the daughter strand to be recognized during mismatch repair?
Acetylation
Methylation
Demethylation
Deacetylation
In base excision repair, the enzyme that cleaves the b-N-glycosidic bond between a damaged base and the sugar component of the nucleotide is called _____?
DNA endonuclease
DNA glycosylase
DNA exonuclease
All of them
Predict the nature of Rho in a Rho-dependent termination?
A exonuclease protein
RNAse protein
A ligase protein
A helicase protein
Which subunit of E.coli RNA polymerase is responsible for correct gene expression?
Alpha
Beta
Gamma
Sigma
Which of the following enzyme doesnot require a primer?
RNA dependent DNA polymerase
DNA dependent DNA polymerase
DNA dependent RNA polymerase
Taq DNA polymerase
What is role of PCNA in eukaryotic replication?
To act as DNA polymerase processivity factor
Act as DNA helicase
To act as primase
None of above
Sequences which are recognised by transposes ezymes are known as
Direct Repeats
Inverted Terminal Repeats
Transposons
Any of them
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