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DNA Structure

Total questions: 15

Worksheet time: 24mins

Name
Class
Date
1.

Why is DNA important?

a)

it is very small and very complicated

b)

it's in everything

c)

it serves as the chemical code for all the proteins in living things

d)

because we eat it every day for energy

2.
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
3.

What are the 4 nitrogenous bases in DNA?

a)

adenine, thymine, cytoplasm, and guanine

b)

adenine, thymine cytosine, and guanine

c)

adenine, thymine, cytosine, and gylcerol

d)

adenine, thymine, cytosine, and glucose

4.

What is the name of the 3-part subunits or building blocks that are used to assemble DNA?

a)

Nucleotide

b)

Nucleic acid

c)

Nitrogenous base

d)

Nucelosome

5.
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
6.

Nucleotides are made up of a sugar, phosphate, and..?

a)

nitrogen base

b)

nucleic acid

c)

cholesterol

d)

fatty acid

7.
Watson and Crick were the first to suggest that DNA is _____
a)
a short molecule
b)
the shape of a double helix
c)
a protein molecule
d)
the genetic material
8.
Which base pairs with adenine
a)
thymine
b)
cytosine
c)
guanine
d)
adenine
9.
Which base pairs with guanine
a)
adenine
b)
cytosine
c)
guanine
d)
thymine
10.
What sugar is in the structure of DNA
a)
Lactose
b)
Deoxyribose
c)

glucose

d)
fructose
11.

Which sequence of DNA bases would be complementary to this partial DNA strand? (Use the base pairing rules.)

ATG TGA CAG

a)

ATG TGA CAG

b)

TAC ACT GTC

c)

GTA AGT GAC

d)

CAT TCA CTG

12.

DNA is an acronym for...

a)

Deoxyriboflavin Nitrogenous Amino

b)

Deoxyribonucleic Acid

c)

Diarthroses Nitrogen Acid

d)

Dominant Numbering Algebra

13.

Who produced this famous shape image of DNA that helped Watson and Crick determine the helical structure?

a)

Rosalind Franklin

b)

James Watson

c)

Francis Crick

d)

Friedrich Miescher

14.
The complimentary DNA Base Sequence to: TTT AAA would be...
a)
 TTT AAA
b)
CCC GGG
c)
GGG CCC
d)
AAA TTT
15.

What part of DNA is different between individuals?

a)

Sugar

b)

Phosphate

c)

Sequence of nitrogen bases