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IB HL DNA replication

Authored by Victoria Jane Young Young

Biology

11th - 12th Grade

Used 52+ times

IB HL DNA replication
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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of DNA helicase?

It breaks hydrogen bonds

It forms hydrogen bonds

It breaks phosphodiester bonds

It forms phosphodiester bonds

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which enzyme relieves pressure on the DNA strand caused by uncoiling?

DNA helicase

DNA gyrase

Single Stranded Binding Proteins

DNA primase

3.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

Name the proteins that prevent separated DNA strands from re-coiling.

(a)  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of DNA primase?

Synthesizes a short RNA sequence

Synthesizes a short DNA sequence

Replaces the RNA primer with DNA

Replaces the DNA primer with RNA

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which describes the function of DNA polymerase III?

Replaces an RNA primer with DNA

Seals breaks in the sugar-phosphate backbone

Adds DNA nucleotides to the 3' end of an existing chain

Adds DNA nucleotides to the 5' end of an existing chain

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

On which strand are Okazaki fragments created?

Leading

Lagging

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

What is the cause of Okazaki fragments?

Discontinuous replication

Continuous replication

Replication in the same direction as helicase action

Replication in the opposite direction to helicase action

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