WorksheetsOPTIONAL DNA REVIEW
Total questions: 24
Worksheet time: 13mins
Name
Class
Date
1.
What is the primary function of DNA?
a)
To provide energy for cells
b)
To store and transmit genetic information
c)
To protect the cell from damage
d)
To assist in protein synthesis
2.
In which organelle is DNA found?
a)
Golgi Bodies
b)
Ribosome
c)
Nucleus
d)
Endoplasmic Reticulum
3.
What is the structure of DNA commonly referred to as?
a)
Single helix
b)
Triple helix
c)
Double helix
d)
Circular helix
4.
Which scientist is known for discovering the structure of DNA?
a)
Erwin Chargaff
b)
Rosalind Franklin
c)
Francis Crick and James Watson
d)
Charles Darwin
5.
Which base pairs with Adenine in DNA?
a)
Cytosine
b)
Thymine
c)
Guanine
d)
Uracil
6.
According to Chargaff's rules, what is true about the percentages of DNA bases?
a)
A = C and T = G
b)
A = T and C = G
c)
A + C = T + G
d)
A + T = C + G
7.
If an organism has 30% Adenine, what percentage of Thymine does it have?
a)
20%
b)
30%
c)
40%
d)
50%
8.
How many types of nitrogen bases are there in DNA?
a)
2
b)
3
c)
4
9.
What is the total percentage of base pairs in DNA that must equal?
a)
50%
b)
75%
c)
100%
d)
200%
10.
What is the significance of Rosalind Franklin's work?
a)
She discovered the nitrogen bases
b)
She identified the double helix structure
c)
She provided X-ray images of DNA
d)
She created the first DNA model
11.
Which base pairs with Cytosine in DNA?
a)
Adenine
b)
Thymine
c)
Guanine
d)
Uracil
12.
Which of the following are nucleic acids found in living organisms?
a)
DNA
b)
RNA
c)
Both
13.
Which of the following are parts of a nucleotide? Check all boxes that apply.
a)
DNA
b)
Phosphate Group
c)
RNA
d)
Nitrogen Base
e)
A five carbon sugar
14.
The role of the sugar phosphate backbone is to carry the genetic information in the DNA.
a)
True
b)
False
15.
Which of the following nitrogen base is not in DNA?
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
e)
Cytosine
16.
Which of the following nitrogen base is not in RNA?
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
e)
Cytosine
17.
Primary functions of DNA are (mark all that apply)
a)
Transmit information on heredity from one generation to the next
b)
Control cellular respiration
c)
Regulate homeostasis
d)
Provide a blueprint for making proteins
18.
What is the function of the sugar-phosphate backbone in a DNA molecule?
a)
It encodes genetic information
b)
It provides structural support
c)
It catalyzes chemical reactions
d)
It pairs with complementary bases
19.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
20.
Which of the following is a base pair?
a)
Adenine - Cytosine
b)
Cytosine - Thymine
c)
Deoxyribose - Cytosine
d)
Cytosine - Guanine
21.
In a molecule of double-stranded DNA, the amount of adenine present is always equal to the amount of _________.
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
22.
Replicate the following strand of DNA:
AATCATGGA
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
23.
WHICH IS THE CORRECT BASE PAIRING FOR RNA?
a)
A-T
b)
C-G
c)
A-U
d)
G-A
24.
Transcribe the following piece of DNA to RNA:
ATCGTA
a)
UAGCAU
b)
TAGCAT
c)
ATCGTA
d)
AUCGUA
100 %
