DNA Replication

Replication of DNA

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Multiple Choice

Which of the following is the function of the

enzyme DNA polymerase during replication?

• It bonds mRNA to original parent strand

• It matches the nucleotide pairs

• It winds up replicated DNA strand

• It bonds new nucleotides to parent strand

Multiple Choice

Which of the following is the function of the

enzyme Ligase replication?

• It bonds mRNA to original parent strand

• It matches the nucleotide pairs

• It connects the fragments of Okazaki together

• It bonds new nucleotides to parent strand

Multiple Choice

•In this diagram of the process of DNA replication at a  replication fork, the strand labeled B is the:

• Template strand

• Lagging strand

• Leading strand

• Okazaki fragment

Multiple Choice

In this diagram of the process of DNA replication at a  replication fork, the black boxes labeled D and E are:

• RNA primers

• Lagging strand

• Leading strand

• Okazaki fragment

Multiple Choice

For the DNA strand  5'-TACGATCATAT-3’  the correct  complementary DNA strand is:

• 3'-TACGATCATAT-5’

• 3'-ATGCTAGTATA-5’

• 3'-AUGCUAGUAUA-5’

• 3'-GCATATACGCG-5’

Multiple Choice

Which is true about the elongation of the leading strand?

• Do not require template strand

• Produce Okazaki fragments

• Requires action of RNA ligase

• Proceed by regularly adding nucleotides to the 3' end

Multiple Choice

Which is true about the elongation of the lagging strand?

• Do not require template strand

• Produce Okazaki fragments

• Requires action of RNA ligase

• Proceed by continously adding nucleotides to the 3' end

Multiple Choice

The graph below shows the process of DNA replication, Which of the following is the function of the enzyme DNA polymerase?

• Adding suitable nucleotides to new DNA strand

• Winds up the replicated DNA strand

• Unwinds the replicated DNA strand

• Bonds mRNA to original parent strand

Multiple Choice

With Parent strand serves as a template for new strands, as shown in the figure below.

Which of the following represents Okazaki fragments?

• A

• B

• C

• D

Multiple Choice

With Parent strand serves as a template for new strands, as shown in the figure below.

Which of the following represents Helicase ?

• A

• B

• C

• D

Multiple Choice

A sequence of parent DNA has four purine bases and two pyrimidine bases. According to base pairing rules, which of the following sequences could be formed during replication?

• 2 cytosine, 2 adenine, 2 thymine

• 2 cytosine, 2 adenine, 2 uracil

• 2 adenine, 2 thymine, 1 guanine, 1 cytosine

• 2 adenine, 2 guanine, 2 cytosine

Multiple Choice

Which is not an enzyme involved in DNA replication?

• DNA Ligase

• DNA Polymerase

• DNA Helicase

• RNA primer

Multiple Choice

Which of the following is the first event of the unwinding during semiconservative replication?

• DNA polymerase break the covalent bonds forming the DNA

• DNA helicase separates the two DNA chains

• DNA helicase breaks the covalent bands forming the nucleotides

• DNA polymerase catalyzes the addition of appropriate nucleotides to the DNA strand

Multiple Choice

What does this diagram show about the replication of DNA in eukaryotic cells?

• DNA is replicated only at certain places along the chromosome.

• DNA replication is both semicontinuous and conservative

• Multiple areas of replication occur along the chromosome at the same time.

• The leading DNA strand is synthesized discontinuously