BIO 304 FINAL EXAM REVIEW;
QUESTIONS WITH DETAILED VERIFIED
ANSWERS; ALREADY GRADED A; 2026
(T or F) Alu elements are SINEs that typically encode an
important human protein, the restriction endonuclease Alu I. -
correct answer- False
(T or F) Bacteria can distinguish between a newly replicated DNA
strand and the original template strand because the newly
replicated strand is methylated, whereas the original template
strand is not. - correct answer- False
(T or F) In the presence of DNA lesions in the cell, the stability of
p53 protein increases. - correct answer- True
(T or F) The human genome contains mobile genetic elements
called retrotransposons that encode reverse transcriptase to
catalyze transposition. - correct answer- True
(T or F) The most prominent example of LINEs in humans are L1
elements. - correct answer- True
, (T or F) The number of STRs present at any site are highly
conserved between individuals. - correct answer- False
(T or F) The number VNTRs of each specific sequence at each
location varies from one individual to the next. - correct
answer- True
(T or F) The process that determines the length of the
heteroduplex DNA on the chromatids is called branch migration.
- correct answer- True
(T or F) Thymine diners can be repaired by photoreactivation
repair or nucleotide excision repair. - correct answer-
True
A 1-mL sample of the bacterium E. coli is exposed to ultraviolet
light. The sample is used to inoculate a 500-mL flask of complete
medium that allows growth of all bacterial cells. The 500-mL
culture is grown on the benchtop, and two equal-size samples
are removed and plated on identical complete-medium growth
plates. Plate 1 is immediately wrapped in a dark cloth, but Plate
2 is not covered. Both plates are left at room temperature for 36
hours and then examined. Plate 2 is seen to contain many more
growing colonies than Plate 1. Thinking about DNA repair
processes, how do you explain this observation? - correct
QUESTIONS WITH DETAILED VERIFIED
ANSWERS; ALREADY GRADED A; 2026
(T or F) Alu elements are SINEs that typically encode an
important human protein, the restriction endonuclease Alu I. -
correct answer- False
(T or F) Bacteria can distinguish between a newly replicated DNA
strand and the original template strand because the newly
replicated strand is methylated, whereas the original template
strand is not. - correct answer- False
(T or F) In the presence of DNA lesions in the cell, the stability of
p53 protein increases. - correct answer- True
(T or F) The human genome contains mobile genetic elements
called retrotransposons that encode reverse transcriptase to
catalyze transposition. - correct answer- True
(T or F) The most prominent example of LINEs in humans are L1
elements. - correct answer- True
, (T or F) The number of STRs present at any site are highly
conserved between individuals. - correct answer- False
(T or F) The number VNTRs of each specific sequence at each
location varies from one individual to the next. - correct
answer- True
(T or F) The process that determines the length of the
heteroduplex DNA on the chromatids is called branch migration.
- correct answer- True
(T or F) Thymine diners can be repaired by photoreactivation
repair or nucleotide excision repair. - correct answer-
True
A 1-mL sample of the bacterium E. coli is exposed to ultraviolet
light. The sample is used to inoculate a 500-mL flask of complete
medium that allows growth of all bacterial cells. The 500-mL
culture is grown on the benchtop, and two equal-size samples
are removed and plated on identical complete-medium growth
plates. Plate 1 is immediately wrapped in a dark cloth, but Plate
2 is not covered. Both plates are left at room temperature for 36
hours and then examined. Plate 2 is seen to contain many more
growing colonies than Plate 1. Thinking about DNA repair
processes, how do you explain this observation? - correct
