WorksheetsDNA structure
Total questions: 10
Worksheet time: 19mins
Name
Class
Date
1.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
2.
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
3.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
4.
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
5.
Cytosine always pairs with
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
6.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
ribosome
d)
nucleus
7.
According to Chargaff's rule, Cytosine always pair with
a)
Adenine
b)
Uracil
c)
Thymine
d)
Guanine
8.
Assume that you have straight hair and your sibling has curly hair. What accounts for this difference?
a)
You have DNA and your sibling does not.
b)
The your sequence of nitrogen bases is different than your sibling.
c)
Your sibling has a weave.
d)
Your sibling has a genetic mutation.
9.
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
10.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
100 %
