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WorksheetsLife Science- Chapter 6 DNA
Total questions: 16
Worksheet time: 15mins
Name
Class
Date
1.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
2.
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
3.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
4.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
5.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
6.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein
7.
What is the function of the ribosome in a cell?
a)
To take DNA and turn it into amino acids (proteins)
b)
To take RNA and read the codons to assemble amino acids
c)
To take amino acids and stamp them together into RNA
d)
To take proteins and stamp them into amino acids.
8.
How did Rosalind Franklin's photo 51 affect the work of Watson and Crick? (picture is shown)
a)
It was used to determine the physical structure of DNA
b)
It was used to identify the four bases that make up DNA
c)
It was used to determine the theory of independent assortment
d)
It was used to show DNA was the molecule of inheritance
9.
Who took a picture of DNA using x-rays?
a)
Rosalind Franklin
b)
James Watson
c)
Erwin Chargaff
d)
Frederick Griffith
10.
Who said, "The amount of A = the amount of T, and the amount of G = the amount of C"?
a)
Chargaff
b)
Avery
c)
Griffith
d)
Franklin
11.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
12.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
13.
Which 2 molecules forms the sides (backbone) of the DNA ladder?
a)
deoxyribose and adenine
b)
deoxyribose and a hydrogen bond
c)
sugar and the nucleus
d)
deoxyribose (sugar) and phosphate
14.
Which shows the correct complementary base pairing for DNA?
a)
C-A, T-G
b)
A-G, C-T
c)
C-G, U-A
d)
T-A, G-C
15.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
16.
Which two scientists are accredited with correctly deducing the double helix model of DNA?
a)
Watson and Crick
b)
Wilkins and Franklin
c)
Wilkins and Crick
d)
Watson and Franklin
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