DNA repair is Autocatalytic system, The recognition and removal of damaged nucleotides is done by ABC

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Free Online Mock Biotechnology Multiple Choice Test on DNA-deoxyribonucleic-acid

Sub Category : DNA-deoxyribonucleic-acid	Test : 4	Time Left :
1.The DNA repair is a/an
(1) Autocatalytic system (2) Allocatalytic system (3) Heterocatalytic system (4) Noncatalytic system
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2.Damages in the DNA are essentially to be repaired because they-
(1) Are harmful to the cell (2) Are deliterious and may cause mutation or death (3) Regulate speedy synthesis of proteins (4) Regulate DNA replication at a very high speed where- Choose the ances of error are very high
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3.Alkylating agents generally cause mutation because they
(1) Alkylate the phosphates of DNA (2) Alkylate the nitrogenous bases of DNA (3) Both (1) and (2) (4) None of the above
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4.Hydrazine - a- Choose the emical, damage DNA by acting on the ring structure of cytosne to produce?
(1) Adenine (2) Pyrazalone (3) Xanthine (4) 3-aminopyrasole
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5.In nucleotide excision repair, the recognition and removal of damaged nucleotides is done by?
(1) Endonuclease (2) DNA polymerase (3) ABC - exinuclease (4) Dam - methylase

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Free Online Mock Biotechnology Multiple Choice Test on DNA-deoxyribonucleic-acid