29..........32 - ebnalfady

[ArchivalUser]

29. Which is the most correct sequence of events in gene repair mecha¬nisms in patients without a mutated repair process?
a. Nicking, excision, replacement, sealing, recognition
b. Sealing, recognition, nicking, excision, replacement
c. Recognition, nicking, excision, replacement, sealing
d. Nicking, sealing, recognition, excision, replacement
e. Nicking, recognition, excision, sealing, replacement

30. Which of the following enzymes can be described as a DNA-dependent RNA polymerase?
a. DNA ligase
b. Primase
c. DNA polymerase III
d. DNA polymerase I
e. Reverse transcriptase

31. Radiation therapy is employed for many cancers, including irradiation of the central nervous system to destroy lymphoblasts in leukemia. Which of the following accounts for the destruction of rapidly growing cells?
a. Cross-linking of DNA
b. Demethylation of DNA
c. Cleavage of DNA double strands
d. Disruption of DNA-RNA transcription complexes
e. Disruption of purine rings in DNA

32. Mammalian chromosomes have specialized structures with highly repetitive DNA at their ends (telomeres). Which aspect of telomeric DNA replication is different from that of other chromosomal regions?
a. The DNA polymerase uses an RNA primer but does not degrade it
b. The DNA polymerase contains an RNA molecule that serves as template for DNA synthesis
c. The DNA polymerase must cross-link the 5² and 3² termini
d. The DNA polymerase has a σ subunit that facilitates binding to repetitive DNA
e. The DNA polymerase does not use an RNA template or primer

[ArchivalUser]

29-c
30-e
31-d
32-e?

[ArchivalUser]

ANY ONE OTHER WANT TO TRY BEFORE POSTING THE ANSWERS

[ArchivalUser]

29:C
30:B
31:C
32:A

[ArchivalUser]

c
b
c
a

[ArchivalUser]

answers
c
b
e
b