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- 1. Multiple Choice
Which of the following replication enzymes is used to unwind the DNA double helix?
DNA polymerase
Primase
DNA ligase
Helicase
- 2. Multiple Choice
Of the following DNA replication enzymes, which one links the Okazaki fragments of the lagging strand?
DNA ligase
DNA polymerase
Helicase
Primase
- 3. Multiple Choice
DNA replication is semi-conservative. This means that __________.
both double strands have different percentages of nucleotides
both double strands have a newly created strand and an original template strand
an entirely new synthesized DNA molecule is created, while the original double helix stays together
none of the above
- 4. Multiple Choice
Which of the following complementary base pairs are correct?
A - T
T - C
A - G
G - U
- 5. Multiple Choice
Which enzyme catalyzes the elongation of a new DNA strand in the 5' → 3' direction?
Ligase
DNA polymerase
Primase
Lactase
- 6. Multiple Choice
DNA is a polymer made of monomers (building blocks) called
Nucleotides
Proteins
Amino Acids
Lipids
- 7. Multiple Choice
A nitrogenous base is an important component of the nucleotide making up DNA. Which of the following correctly lists the four possible nitrogenous bases in DNA?
glutamine, proline, tyrosine, phenylalanine
adenine, guanine, cytosine, thymine
leucine, proline, tyrosine, phenylalanine
adenine, guanine, cytosine, uracil
- 8. Multiple Choice
What is an Okazaki fragment?
short RNA primers placed before DNA replication starts
long segments of DNA on leading strand
short sequences of DNA which are synthesized discontinuously on lagging strand
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- 9. Multiple Choice
Site or section where double-stranded DNA splits apart into 2 single strands
Leading Strand
Replication Fork
Lagging Strand
RNA primer
- 10. Multiple Choice
(Hard) Which of the following is true?
Strand III is a lagging strand template while strand IV is a leading strand template
Strand I is the leading strand while Strand II is the lagging strand
Strand I and Strand II are template (parental) strands
Strand III is complimentary to Strand II
- 11. Multiple Choice
Which strand is replicated continuously?
Leading strand
Lagging strand
Template strand
- 12. Multiple Choice
DNA polymerase can only add nucleotides in the ___________ direction.
5' to 3'
5' to 5'
3' to 5'
3' to 7'
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