DNA Structure and Replication

DNA Structure and Replication

10th Grade

25 Qs

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DNA Structure and Replication

DNA Structure and Replication

Assessment

Quiz

Science

10th Grade

Practice Problem

Medium

Created by

Leah Willochell

Used 4+ times

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the components of a DNA nucleotide?

Sugar, phosphate, nitrogenous base

Amino acid, sugar, phosphate

Nitrogenous base, amino acid, sugar

Phosphate, lipid, nitrogenous base

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which enzyme is responsible for unwinding the DNA double helix during replication?

DNA polymerase

Helicase

Ligase

Topoisomerase

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During DNA replication, what is the function of DNA polymerase?

It seals the gaps between Okazaki fragments.

It synthesizes new DNA strands from RNA primers.

It adds nucleotides to the growing DNA strand in the 5' to 3' direction.

It creates RNA primers.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a nitrogenous base in DNA?

Adenine

Cytosine

Uracil

Thymine

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the semi-conservative nature of DNA replication?

Each daughter DNA molecule contains one strand from the parent and one new strand.

Both strands of the daughter DNA molecules are newly synthesized.

The parent DNA molecule is conserved while a completely new molecule is synthesized.

Each base pair is conserved while the sugar-phosphate backbone is newly synthesized.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which enzyme is responsible for joining Okazaki fragments together?

DNA polymerase

Helicase

Ligase

Primase

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of primase during DNA replication?

It synthesizes a short RNA primer to initiate DNA synthesis.

It unwinds the DNA helix.

It joins Okazaki fragments.

It proofreads the newly synthesized DNA strand.

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