PCB 3063 COMPLETE & VERIFIED
FINAL EXAM III (UPDATED
2025/2026) 100% SOLVED - UF
(Chapters 12, 13, 14, 15)
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35 questions x 3 pts each = 105 possible points. Grade calculated out of 100 points.
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1) One difference between bacterial and eukaryotic DNA replication is that
A) a leading strand is synthesized continuously only in bacteria.
B) telomeres are extended only in bacteria.
C) DNA is synthesized at multiple replication bubbles only in eukaryotes.
D) primers are synthesized only in eukaryotes.
E) ligase forms phosphodiester bonds between fragments only in eukaryotes.
2) The figure above represents a replication bubble. Where would you draw a lagging DNA strand being
synthesized at the left replication fork, starting at the Origin sequence?
A) Draw a line parallel to the bottom strand pointing to the left.
B) Draw a line parallel to the top strand pointing to the left.
C) Draw a line parallel to the top strand and pointing to the right.
D) Draw a line parallel to the bottom strand pointing to the right.
3) You are studying a newly bacteria species with a genome size of 400,000 base pairs. If the rate of DNA
synthesis at each replication fork is 100,000 nucleotides per minute, how much time will it take to replicate
this genome?
A) 1 min
B) 2 min
C) 4 min
D) 5 min
E) 10 min
4) One of Meselson and Stahl's centrifugation results that supported the semi-conservative model of DNA
replication was the after one round of replication.
A) the presence of molecules consisting of 2 strands of heavy DNA
B) the presence of molecules consisting of 2 strands of light DNA
C) the presence of molecules consisting of DNA strands that each contain a mixture of light nucleotides
and heavy nucleotides
D) the presence of molecules consisting of 1 strand of heavy DNA and 1 strand of light DNA
E) the absence of molecules consisting of a mixture of heavy nucleotides in any DNA strand
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