chickenjo exam 1
Flashcard
•
Science
•
University
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the role of cyclin E in the cell cycle?
Back
Cyclin E is crucial for the transition from the G1 phase to the S phase of the cell cycle, where DNA replication occurs.
2.
FLASHCARD QUESTION
Front
What happens if the gene for cyclin E is mutated?
Back
If cyclin E is mutated and cannot produce a correctly folded protein, the cell cycle will stop before duplicating chromosomes.
3.
FLASHCARD QUESTION
Front
What is hydrogen bonding's role in DNA structure?
Back
Hydrogen bonds between complementary bases hold the two strands of DNA together, stabilizing the double helix structure.
4.
FLASHCARD QUESTION
Front
Which DNA sequence would require the least energy to separate during replication?
Back
The sequence TAATCACT would require the least energy due to having fewer hydrogen bonds compared to others.
5.
FLASHCARD QUESTION
Front
What percentage of DNA molecules contain atoms from the original DNA after two rounds of replication?
Back
25% of the double-stranded DNA molecules will contain atoms from the original DNA molecule after two rounds of replication.
6.
FLASHCARD QUESTION
Front
What is Nucleotide Excision Repair?
Back
Nucleotide Excision Repair is a DNA repair mechanism that removes damaged nucleotides and replaces them with the correct ones.
7.
FLASHCARD QUESTION
Front
What is the significance of UV rays in DNA replication?
Back
Excessive UV exposure can cause errors in DNA replication that may not be corrected, leading to mutations.
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