WorksheetsDNA Replication and Structuure
Total questions: 25
Worksheet time: 14mins
Name
Class
Date
1.
What is the name of the proteins that DNA wraps around in order to condense?
a)
Single Stranded Binding Proteins
b)
Histones
c)
Tertiary Structures
d)
Nucleosomes
2.
What is the name of the combined structure of DNA that has wrapped itself around a histone?
a)
Nucleotide
b)
Nucleosome
c)
DNA-Histone Complex
d)
Secondary Structure of DNA
3.
Which of these is a function of DNA?
a)
Replicate Cells
b)
Create a genome
c)
Store Genetic Information
d)
Change in accordance with the environment
4.
What is added one by one during replication?
a)
Deoxyribonucleotides
b)
Ribonucleotides
c)
DNA Polymerase
d)
Single Stranded Binding proteins
5.
Which of these enzymes is not a part of DNA Replication?
a)
Helicase
b)
Topoisomerase
c)
Ligase
d)
Hexokinase
6.
If DNA Polymerase is reading the following sequence: 3'-AATCGC-5' what will the enzyme add to the growing DNA strand?
a)
5'-GCGATT-3'
b)
5'-TTAGCG-3'
c)
5'-AATCGC-3'
d)
3'-AATCGC-5'
7.
When synthesizing a new DNA strand, DNA polymerase writes ________
a)
5' to 3'
b)
3' to 5'
c)
3' to 5' or 5' to 3'
8.
___________ is to DNA and _______ is to RNA
a)
Ribose / Deoxyribose
b)
Phosphodiester bonds / 2' Hydroxyl group
c)
Nucleotides / Nucleosomes
d)
Deoxyribose / Ribose
9.
Which nitrogen base does RNA have that DNA does not?
a)
Thymine
b)
Adenine
c)
Uracil
d)
Cytosine
10.
What enzyme is responsible for laying down the RNA primers during DNA Replication?
a)
Helicase
b)
RNA Primase
c)
Ligase
d)
There are no RNA primers during DNA Replication
11.
Which of these enzymes is responsible for breaking the hydrogen bonds which "unzips" the DNA molecule?
a)
Topoisomerase
b)
Primase
c)
Helicase
d)
zippase
12.
Which enzyme is responsible for adding nucleotides?
a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
13.
This image shows that DNA Replication is _______.
a)
Conservative
b)
Semiconservative
c)
Dispersive
d)
Spontaneous
14.
Which strand is synthesized continuously during DNA Replication
a)
Leading Strand
b)
Lagging Strand
15.
The _________ contains __________.
a)
Leading Strand / Okazaki Fragments
b)
Lagging Strand / Okazaki Fragments
c)
Leading Strand / Topoisomerase
d)
Lagging Strand / dispersive replication
16.
Okazaki fragments are a result of _________.
a)
Semiconservative replication
b)
Discontinuous replication
c)
DNA Polymerase
d)
Single Stranded Binding Proteins
17.
What is responsible for preventing the opened DNA strands from reannealing?
a)
Topoisomerase
b)
Okazaki Fragments
c)
Single Stranded Binding Proteins
d)
Primase
18.
If DNA Polymerase is responsible for synthesizing DNA on the Leading Strand, what enzyme synthesizes DNA on the Lagging Strand?
a)
Primase
b)
RNA Polymerase
c)
DNA Polymerase
d)
Helicase
19.
Where on the DNA molecule does replication start?
a)
At one end
b)
At both ends
c)
At the origin
d)
In the exact middle of the molecule
20.
What type of bond forms between the two strands of DNA?
a)
Polar Covalent
b)
Hydrogen
c)
Ionic
d)
Phosphodiester
21.
Which enzyme is responsible for maintaining telomeres?
a)
Hexokinase
b)
Telomerase
c)
Topoisomerase
d)
Helicase
22.
How many DNA molecules are in a single chromosome?
a)
One
b)
Two
c)
Four
d)
The number varies
23.
Which form of chromatin is less compact and therefore, more accessible to enzymes?
a)
Euchromatin
b)
Heterochromatin
c)
Chromatid
d)
Euchromatin and Heterochromatin are equally compact.
24.
What is the name of the shape of DNA?
a)
Single Helix
b)
Double Helix
c)
Double Stranded
d)
Semiconservative
25.
Which of these is not a part of a nucleotide
a)
Pentose Sugar
b)
Purine
c)
Phosphate
d)
Nitrogenous Base
100 %
