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Worksheets8th Grade Science DNA-MUTATION
Total questions: 10
Worksheet time: 14mins
Name
Class
Date
1.
Which is the best definition of DNA?
a)
a spiral ladder
b)
something in your cells
c)
the genetic code
d)
What makes you, you
2.
The yellow part of this picture is DNA. What is the X shaped object?
a)
chromosome
b)
gene
c)
DNA
d)
ACTG
3.
What is the human genome?
a)
a piece of DNA
b)
a chromosome
c)
all of your cells
d)
all of your DNA
4.
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
5.
What shape is DNA?
a)
a circle
b)
a triangle
c)
a double helix
6.
Give an example of a nucleotide...
a)
Deoxyribose-Phosphate- Adenine
b)
Phosphate-Deoxyribose-Adenine
c)
Adenine-Phosphate-Deoxyribose
7.
A cell has how many pairs of XX...
a)
46
b)
2
c)
23
8.
What kind of information does DNA carry?
a)
genetic
b)
nuclear
c)
cell structure
d)
it doesn't carry any info
9.
A ______ is a section of DNA that codes for a trait.
a)
gene
b)
genotype
c)
phenotype
d)
gender
10.
Examples of environmental factors for mutations are
a)
harmful chemicals
b)
exposure to x-rays
c)
radiation
d)
mistakes during replication
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