DNA Replication Quiz

What is the correct pairing of nitrogenous bases in DNA?

• A-T and G-C

• A-G and T-C

• A-C and G-T

• A-A and T-T

What type of bond is found between the nitrogenous base pairs in DNA?

• nucleotide bond

• Covalent bond

• Hydrogen bond

• glycosidic bond

How many hydrogen bonds are formed between Guanine and Cytosine in DNA?

• 1

• 2

• 3

• 4

In the newly replicated DNA, what does each molecule consist of?

• Two parent strands

• Two new strands

• One parent strand and one new strand

• One parent strand and two new strands

What is the function of DNA ligase in DNA replication?

• Unwinding the DNA double helix

• Synthesizing RNA primers

• Joining Okazaki fragments

• Relieving the tension in the DNA strand

What is the function of topoisomerase during DNA replication?

• It synthesizes RNA primers

• It relieves the twisting force on either side of the helix that hasn't been unwound yet

• It prevents the helix from reforming

• It unzips the double helix

What is the role of helicases in DNA replication?

• They bind the DNA polymerase to the template strand.

• They break the hydrogen bonds between the complementary base pairs.

• They create the Okazaki fragments on the lagging strand.

• They synthesize new DNA strands in the 5' to 3' direction.

How many hydrogen bonds are typically formed between Adenine and Thymine?

• 1

• 2

• 3

• 4

In which direction is DNA synthesized?

• 3' to 5'

• 5' to 3'

• In both 5' to 3' and 3' to 5' directions

• DNA is not synthesized in a specific direction

How is the leading strand synthesized during DNA replication?

• Discontinuously with the formation of Okazaki fragments.

• Continuously in the 5' to 3' direction.

• It requires DNA ligase to join fragments together.

• It is synthesized in the 3' to 5' direction.