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BIOD 102 Exam 1 with Questions & Correct Answers 2024/2025 100% guaranteed pass

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  • May 7, 2024
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  • 2023/2024
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BIOD 102 Exam 1 with Questions &

Correct Answers 2024


1. Replication of DNA begins at a single origin of replication and

then proceeds the entire length of the strand, in one direction

(T/F) - ANS -False




2. What enzyme is responsible for relieving the stress associated

with the twisting and untwisting of a DNA strand during

replication. - ANS -Topoisomerase




3. As a replicated DNA strand elongates, what enzyme is

responsible for adding nucleotides? - ANS -DNA polymerase

,4. The energy required to add a nucleotide to a growing chain is

supplied by an exergonic reaction involving the hydrolysis of the

nucleotide's pyrophosphate tail (T/F) - ANS -True




5. During elongation, in which direction are new nucleotides being

added to the leading strand? - ANS -5' —> 3'




6. The leading strand requires ____ # of RNA primers, and the

lagging strand requires ____ # of RNA primers. - ANS -One; more

than one




7. What replaces RNA nucleotides with DNA nucleotides in a newly

synthesized strand? - ANS -DNA Polymerase

, 8. A class of DNA polymerase patrols newly added nucleotides and

will remove nucleotides that are erroneous. How does the

polymerase "know" a nucleotide is misplaced. - ANS -Newly adde

nucleotides are compared to the complimentary template strand.




9. Mismatch repair is the process of identifying nucleotides that

are inappropriately matched, such as guanine with a thymine,

and removes the incorrect nucleotide from the newly

synthesized strand (t/f) - ANS -True




10. Nucleotide excision repair (cutting DNA) is accomplished by

what enzyme? - ANS -Nucleases




11. Telomeres contain a large proportion of vital coding DNA

(T/F) - ANS -False

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