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BIO 340 FINAL EXAM QUESTIONS AND ANSWERS
LATEST UPDATE 2026/2027 | VERIFIED SOLUTIONS |
GUYARANTEED SUCCESS.
1. Which of the following is true regarding the direction of new DNA
synthesis during replication? - correct answer - The lagging strand
DNA polymerase synthesizes DNA in the opposite direction that the
replication fork is moving.
2. The mrna strand being transcribed will be made in the_____. -
correct answer - 5' to 3' direction
3. In eukaryotes, which of the following is true about introns and exons?
- correct answer - he immature mrna transcript contains a mix of
introns and exons
4. If an mrna molecule has introns and exons in it, where is it? - correct
answer - in the nucleus
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5. What might cause the transcription of lacy and lacz genes both in the
presence and the absence of lactose? - correct answer - A mutation
in the repressor protein domains that bind the operator
6. A mutation in the operator preventing repressor binding
7. Which region(s) of a gene in humans are found within the mrna
transcript? - correct answer - stop codon, intron, exon, 5' UTR and 3'
UTR
8. Which of the following describes the second transesterification
reaction in nuclear mrna splicing? - correct answer - joining the 3′ end
of exon 1 to the 5′ end of exon 2
9. When an operon is negative repressible... - correct answer - A
repressor protein is activated by a co-repressor
10. A repressor protein is deactivated by an inducer
11. Which of the following statements about ddntps is true? - correct
answer - ddntps have a 3′-hydrogen on the sugar.
12. Sanger sequencing is used to: - correct answer - determine the
nucleotide sequence of a stretch of DNA
13. Which of the following is NOT a core histone protein? - correct
answer - H1
BIO 340 FINAL EXAM QUESTIONS AND ANSWERS
LATEST UPDATE 2026/2027 | VERIFIED SOLUTIONS |
GUYARANTEED SUCCESS.
1. Which of the following is true regarding the direction of new DNA
synthesis during replication? - correct answer - The lagging strand
DNA polymerase synthesizes DNA in the opposite direction that the
replication fork is moving.
2. The mrna strand being transcribed will be made in the_____. -
correct answer - 5' to 3' direction
3. In eukaryotes, which of the following is true about introns and exons?
- correct answer - he immature mrna transcript contains a mix of
introns and exons
4. If an mrna molecule has introns and exons in it, where is it? - correct
answer - in the nucleus
, Page|2
5. What might cause the transcription of lacy and lacz genes both in the
presence and the absence of lactose? - correct answer - A mutation
in the repressor protein domains that bind the operator
6. A mutation in the operator preventing repressor binding
7. Which region(s) of a gene in humans are found within the mrna
transcript? - correct answer - stop codon, intron, exon, 5' UTR and 3'
UTR
8. Which of the following describes the second transesterification
reaction in nuclear mrna splicing? - correct answer - joining the 3′ end
of exon 1 to the 5′ end of exon 2
9. When an operon is negative repressible... - correct answer - A
repressor protein is activated by a co-repressor
10. A repressor protein is deactivated by an inducer
11. Which of the following statements about ddntps is true? - correct
answer - ddntps have a 3′-hydrogen on the sugar.
12. Sanger sequencing is used to: - correct answer - determine the
nucleotide sequence of a stretch of DNA
13. Which of the following is NOT a core histone protein? - correct
answer - H1
