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DNA Structure and Genetics

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Questions and Answers

What is the direction of DNA synthesis by DNA polymerase III?

5' → 3' (correct)
Either direction
Both directions
3' → 5'

What is the role of RNA primer in DNA replication?

To proofread DNA
To repair DNA damage
To ligate Okazaki fragments
To initiate DNA synthesis (correct)

What is the function of DNA polymerase I?

To ligate Okazaki fragments
To synthesize DNA continuously
To unwind DNA double helix
To remove RNA primer and replace with DNA (correct)

What is the name of the enzyme that 'spot welds' Okazaki fragments?

Ligase (A) Signup and view all the answers

What is the characteristic of DNA synthesis on the leading strand?

Continuous synthesis (C) Signup and view all the answers

What is the role of DNA polymerase III in DNA replication?

To synthesize DNA on the leading strand (C) Signup and view all the answers

What is the characteristic of DNA synthesis on the lagging strand?

Discontinuous synthesis (D) Signup and view all the answers

What is the function of primase in DNA replication?

To synthesize RNA primer (D) Signup and view all the answers

What is the direction of Okazaki fragment synthesis?

5' → 3' (A) Signup and view all the answers

What is the limitation of DNA polymerase III?

It can only synthesize DNA in a 5' → 3' direction (D) Signup and view all the answers