DNA History, Structure, and Replication

Flashcard
•
Biology
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is DNA Helicase?
Back
An enzyme responsible for unwinding and unzipping the DNA during replication and transcription.
2.
FLASHCARD QUESTION
Front
What did Erwin Chargaff conclude from his experiments?
Back
A and T, C and G always occur in equal amounts.
3.
FLASHCARD QUESTION
Front
What are the PURINE nitrogen bases?
Back
Adenine and Guanine.
4.
FLASHCARD QUESTION
Front
What does the semi-conservative model of DNA replication state?
Back
The original strand serves as a template for the construction of the new strand.
5.
FLASHCARD QUESTION
Front
What is nitrogen base pairing?
Back
The specific pairing of nitrogenous bases in DNA: Adenine with Thymine, and Cytosine with Guanine.
6.
FLASHCARD QUESTION
Front
What is the role of DNA Polymerase?
Back
An enzyme that synthesizes new DNA strands by adding nucleotides to a growing chain.
7.
FLASHCARD QUESTION
Front
What is the function of DNA Ligase?
Back
An enzyme that joins Okazaki fragments on the lagging strand during DNA replication.
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