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WorksheetsDNA
Total questions: 12
Worksheet time: 9mins
Name
Class
Date
1.
How many chromosomes do human cells have?
a)
2
b)
23
c)
46
d)
38
2.
Adenine bonds with
a)
Cytosine
b)
Thymine
c)
Guanine
d)
Adenine
3.
What are the nucleotides made of?
a)
Sugar, Phosphate, nitrogen base
b)
Phosphate, Adenine, nitrogen base
c)
Thymine, Adenine, Cytomine
d)
Phosphate, Nitrogen, Adenine
4.
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
5.
The shape of the DNA molecule is a double __________________?
a)
"S"
b)
helix
c)
rope
d)
curve
6.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
7.
The four bases of DNA are
a)
Thymine, Adenine, Cortisol, and Medinine
b)
Thymine, Guanine, Adenine, and Cytosine
c)
Cytosine, Adenine, Medinine, and Thymine
d)
Adenine, Guanine, Cortisol, and Medinine
8.
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
9.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
10.
The two strands of nitrogenous bases in DNA are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
11.
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
12.
In eukaryotes, which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
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