WorksheetsCSIR NET MCQs : DNA Replication
Total questions: 15
Worksheet time: 8mins
Ciprofloxacin is a synthetic chemotherapeutic antibiotic of the Flouroquinolone drug class. The target of antibiotic Ciprofloxacin is...
Replication
Membrane Structure
Protein SynthesisCell wall synthesis
Cell wall synthesis
Among the following which is termed as proof reading activity of DNA polymerase?
3->5' Exonuclease activity
5->3' Polymerase activity
3->5' Polymerase activit
5->3' Exonuclease activity
In prokaryotes during replication, the lagging strand synthesized in a series of short fragments known as Okazaki fragments, consequently requiring many primers. The RNA primers of okazaki fragments are subsequently degraded by DNA polymerase I and the gap once the primer have been removed from lagging strand?
DNA from leading strand serves as primer
End of existing Okazaki fragments on lagging strand serves as primer
DNA polymerase I has its own primer
DNA polymerase I do not require primer
Genome of Virus is made up of.....
Proteins
DNA or RNA
DNA
RNA
Most Plant Viruses Contain.....
RNA
DNA
DNA & RNA
None of these
DNA which is the sear of all the hereditary characters is chiefly found in.....
None of these
Nucleus
Chloroplast
Mitochondria
Who demonstrates that DNA replicates in a semi-conservative manner?
Jacob and Monad
Meselson and Stahl
McLeod and McCarty
Watson and Crick
Formation of new DNA molecules from the parent DNA which are exactly similar to its replica is called ...
Gene mutation
Replication of DNA
Segmentation of DNA
Terminalization of DNA
The Two polynucleotide chains of the parent DNA molecule separate due to breaking of.....
O-bond
All of these
S-bond
H-bond
When does the replication of DNA take place?
During mitosis
During pachytene and diplotene of meiosis
During interphase between two mitotic cycles
During meiosis
Which of the following statement /statements is/are correct regarding replication of DNA?
Replication starts at a specific point called origin
Replication is a semi-conservative process in which each of the two double helices formed from the parent double strand have one old and one new strand
Two strands of double helix of DNA unwind with the help of a DNA unwinding protein which binds to single DNA strands.
All of the statements are correct
Who demonstrated by auto-radiography that both chromatids during prophase have half old and half new material?
McLeod and McCarty
Taylor et al
Watson and Crick
Jacob and Monad
Replication may proceed.....
In only one direction (unidirectional)
In both direction (bidirectional)
Can not be determined
None of these
Which of the following enzymes are used to join bits of DNA?
DNA Ligase
Primase
Endonuclease
DNA Polymerase III
Semi conservative replication of DNA was first demonstrated in.....
Salmonella typhimurium
Escherichia coli
Drosophila melanogaster
Streptococcus pneumoniae
