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am
Due No due date
v v v Points 100 v Questions 23 v
Time Limit 60 Minutes
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This quiz is currently locked.
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Attempt History v
Attempt Time Score
LATEST Attemptv1 60vminutes 57voutvofv100
Score for this quiz: 57 out of 100 This
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attempt took 60 minutes.
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nanswered v Question 1 v
pts
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v Consider the following DNA sequence: 3’-AAC TAC TGTGTA -5’
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a. Write out the complementary RNA sequence, including the 5’
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and 3’. v
b. Translation starts on which end of the RNA (5’ or 3’)?
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c. Identify the start codon in the complementary sequence you
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wrote in part a. of this question.
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, Your Answer:
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a. 5’-UUG AUG ACA CAU -3’
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b. 5’
c. AUG
Question 2 v pts
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True or False: Transcription of DNA into mRNA does not require an
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RNA primer.
v
v Truev
Correct!
v False
Question 3 v pts
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, Why must the DNA within eukaryotes be complexed with histone prote
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ins, but not in bacteria? What happens to these complexes during DN
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A replication?
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Your Answer: v
Because in eukaryotes have ends on their DNA and bacteria is circu
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lar at the ends they have to be able to fuse so bacteria is unable to b
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ecause of the circular shape v v v v
the DNA unwinds and the nucleosome reforms and the histones prot
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eins is very tightly coupled so new DNA strand can be wrapped up w
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ith new histones
v v
There is a huge amount of DNA within a eukaryotic cell, a
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nd it needs to be stored within a tiny space within the nu
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cleus. Therefore, it is complexed with proteins into chro
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matin that help to condense it into an extremely compac
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t form. When it is time for DNA replication to occur, the c
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omplexes relax due to the proteins dissociating from it.
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Then as soon as replication is complete at a certain poin
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t, the DNA winds around the histone proteins and recon
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denses.