Genetic

Which of the following mechanisms Will remove uracil and incorporate the correct base

• Direct repair

• Base excision repair

• Mismatch repair

• Nucleotide excision repair

An Apyrimidinic or Apurinic (AP) site forms in which Type of DNA repair

• Base excision repair

• Direct repair

• Mismach repair

• Nucleotide excision repair

A defect in which of the following repair mechanisms would be associated with HNPCC in humans

• Mismach repair

• Nucleotide excision repair

• Base excision repair

• Recombinational repair

In mismatch repair mechanism, the endonuclease activity which cut the nascent DNA is done by

• Mut H

• Mut S

• Mut L

• UVRD

• Mut K

In mismatch repair mechanism, which of the following proteins recognizes DNA mismatch in genomic DNA?

• Mut H

• Mut S

• Mut L

• UVRD

• AP lyase

Which of the following activity is required for proofreading during DNA replication by DNA polymerase III?

• 5' to 3' exonuclease activity.

• 3' to 5' exonuclease activity

• 1. 3' to 5' endonuclease activity

• 1. 5' to 3' endonuclease activity

• 1. 5' to 3' polymerase activity

Which of the following is TRUE for the RNA polymerase activity?

• DNA-dependent DNA polymerase.

• DNA-dependent RNA polymerase.

• 1. RNA-dependent RNA polymerase.

• 1. RNA-dependent DNA polymerase.

To which of the following structures in a typical molecule of tRNA is an amino acid attached?

• CCA tall

• D loop

• 1. Anticodon loop

• 1. Variable loop

• 1. 5'-End

Like replication, transcription also occurs bidirectionally.

• True

• False

The bases of RNA are the same as those of DNA with the exception that RNA contains

• 1. cysteine instead of cytosine.

• 1. cytosine instead of guanine.

• 1. uracil instead of thymine.

• 1. uracil instead of adenine.