SCIN130 QUIZ 5 QUESTIONS WITH ANSWERS

SCIN130 QUIZ 5 QUESTIONS WITH ANSWERS
Question 1 of 31
3.0 Points
Which nitrogenous base is present in RNA and not DNA?



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A. uracil


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B. thymine


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C. cytosine


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D. adenine


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E. guanine




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Question 2 of 31
3.0 Points
How long would the peptide be that is translated from the mRNA sequence:
5’- AUGAUCGAUCACUAA-3’?



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, A. 5


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B. 3


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C. 2


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D. 1


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E. 4




Feedback:Amino acids are coded using a 3 nucleotide system, so for every 3 nucleotides, there is
one amino acid added to a peptide sequence. Review translation in Chapter 9.
Question 3 of 31
3.0 Points
Why does one strand of DNA replicate as a continuous strand, and the other in fragments?



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A. they are parallel, and DNA polymerase can synthesize from 5’ to 3’


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B. they are parallel, and DNA polymerase can synthesize in either direction

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C. they are anti-parallel, and DNA polymerase can only synthesize from 5’ to 3’


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D. they are anti-parallel, and DNA polymerase can synthesize in either direction




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Question 4 of 31
3.0 Points
What is the central dogma of genetic information?



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A. DNA produces proteins directly


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B. proteins code for DNA and RNA


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C. RNA stores our genome for safety


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D. DNA encodes RNA, which in turn encodes protein




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