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DNA Discovery Structure and Function

Total questions: 25

Worksheet time: 16mins

Name
Class
Date
1.
The scientists who created an accurate model of the DNA double helix and won a Nobel Prize for this discovery
a)
Watson & Crick
b)
Watson, Crick, and Wilkins
c)
Wilkins & Crick
d)
Watson, Crick, Wilkins, and Franklin
2.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
3.

Which of the following monomers are repeatedly joined together to form a strand of DNA?

a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
4.

In eukaryotes, DNA is usually found in the​ (a)   , while in prokaryotes, DNA is found in the ​ (b)   .

Choose from the below words
nucleus
cytoplasm
5.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
6.
What are the three components of a nucleotide?
a)

ribose, hydrogen, nitrogen base

b)

deoxyribose, oxygen, nitrogen base

c)

deoxyribose, phosphate, nitrogen base

d)

ribose, phosphate, protein

7.
DNA and RNA are macromolecules in the category of
a)
Proteins
b)
Lipids
c)
Nucleic Acids
d)
Carbohydrates
8.
Which of the following is a base that is NOT contained in DNA?
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
9.
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
10.
If there is 37% guanine how much cytosine is there?
a)
77%
b)
47%
c)
37%
d)
57%
11.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
12.
How did Rosalind Franklin's photo 51 affect th work of Watson and Crick?
a)
It was used to determine the physical structure of DNA
b)
It was used to identify the four bases that make up DNA
c)
It was used to determine the theory of independent assortment
d)
It was used to show DNA was the molecule of inheritance
13.
Franklin used x-ray crystallography to determine the shape of the DNA molecule is
a)
a cloverleaf
b)
a braided rope
c)
a pleated sheet
d)
a twisted ladder
14.
Who was responsible for determining the structure of DNA?
a)
Watson and Crick
b)
Chargaff
c)
Rosalind Franklin
d)
All of the above
15.

Which of these are purines (larger nitrogenous bases?) CHOOSE 2

a)

Adenine

b)

Thymine

c)

Cytosine

d)

Guanine

16.

Which of these are pyrimidines (smaller nitrogenous bases?) CHOOSE 2

a)

Adenine

b)

Thymine

c)

Cytosine

d)

Guanine

17.

The sugar in DNA is called

a)

glucose

b)

deoxyribose

c)

ribose

d)

phosphate

18.

Match the following

a)

Avery

1.

Genetic material is DNA (not protein)

b)

Hershey & Chase

2.

Viruses have DNA too

c)

Miescher

3.

Discovered the DNA molecule

d)

Chargaff

4.

discovered the base pairing rules for DNA

e)

Griffith

5.

Discovered transformation using pneumonia bacteria

19.

Chargraff's Rule says that

a)

A pairs with C

b)

C pairs with G

c)

G pairs with T

d)

T pairs with A

20.
Replicate the following strand of DNA: 
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
21.
Small segments of DNA made on the lagging strand are called:
a)
Okazaki Fragments
b)
ERVs
c)
Transposable Elements
d)
Telomeres
22.
What strand is copied backwards?
a)
Leading
b)
Lagging
23.
What strand is copied faster?
a)
Leading
b)
Lagging
24.
DNA replication always occurs in this direction:
a)
5' --> 3'
b)
3' --> 5'
c)
either direction
25.

Match the following

a)

Topoisomerase

1.

Loosens DNA helix

b)

Helicase

2.

Unzips DNA strand

c)

Primase

3.

Starts base pairing and placing Okazaki fragmenst

d)

DNA Polymerase

4.

Adds bases and proofreads strand

e)

Ligase

5.

Reattaches DNA at end of replication

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