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WorksheetsDNA
Total questions: 20
Worksheet time: 17mins
Name
Class
Date
1.
The 'ladder rungs' inside DNA are called...
a)
Nitrogen bases
b)
Phosphate bases
c)
Oxygen bases
d)
Carbon bases
2.
The shape of DNA.
a)
double helix
b)
nucleotide
c)
DNA polymerase
d)
single stranded
3.
If we think of DNA as a ladder, which parts are the sides of the ladder?
a)
the nitrogenous base pairs
b)
the phosphate-sugar backbone
c)
the genes
d)
the phospholipid bilayer
4.
The base that pairs with Thymine...
a)
Guanine
b)
Cytosine
c)
Adenine
d)
Thymine
5.
The base that pairs with Guanine...
a)
Thymine
b)
Cytosine
c)
Adenine
d)
Guanine
6.
The base pair that pairs with Adenine...
a)
Guanine
b)
Cytosine
c)
Adenine
d)
Thymine
7.
The base that pairs with cytosine...
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
8.
DNA stands for...
a)
Deoxyribonucleic acid
b)
Deoxyribonenuclear acid
c)
Deoxyrobophosphorous acid
d)
Deoxyrinonucleic acid
9.
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
10.
Which sequence of complementary DNA bases would pair with this partial strand
ATG TGA CAG?
ATG TGA CAG?
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
11.
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
12.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
13.
The drawing shows the structure of what molecule?
a)
A DNA molecule
b)
A lipid molecule
c)
A carbohydrate molecule
d)
A protein molecule
14.
Which of the following is correctly matches: ATT GTA CGA
a)
TAA CAT GCT
b)
ATT GTA CGA
c)
TAA GTA TCG
d)
GCC ACG TAC
15.
Which of the following correctly matches: GCT AGA TCG
a)
CGA TCT AGC
b)
TAG CTC GAT
c)
ATC GAG CTA
d)
ATG CTC CGT
16.
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
17.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
18.
If a DNA molecule consists of 29% Guanine, how much cytosine will it contain?
a)
29%
b)
58%
c)
21%
d)
I have no idea.
19.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
ribosome
d)
nucleus
20.
What will the matching sequence be on a strand that reads AAGCTAT?
a)
AACGATA
b)
TTCGTTA
c)
CCTGATA
d)
TTCGATA
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