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Biology Quiz 12-1
Test Description: DNA
Instructions: Answer all questions to get your test result.
1) The subunits of DNA are called nucleotides.
A
False
B
true
2) Which of the following show the correct base pairing in DNA?
A
Adenine-Cytosine
B
Adenine-Guanine
C
Adenine-Thymine
D
Guanine-thymine
3) The structure of DNA can be described as a double helix or twisted ladder.
A
False
B
True
4) Which of the following show the correct base pairing in DNA?
A
Adenine-Cytosine
B
Guanine-Cytosine
C
Adenine-Thymine
D
Both A and C
5) The nitrogen bases in DNA are held together by covalent bonds.
A
False
B
True
6) What is released when the bonds between nitrogen bases in DNA are broken?
A
gas
B
heat
C
light
D
water
7) Nucleotides are made up of a sugar, phosphate, and hydrogen base.
A
False
B
True
8) A DNA nucleotide consists of a
A
sugar-phosphate-nitrogen base
B
sugar-phosphate-hydrogen base
C
sugar-hydrogen-nitrogen base
D
salt-phosphate-hydrogen base
9) Uracil is one of the four nitrogen bases in DNA.
A
False
B
True
10) Which of the following lists part of a nucleotide?
A
ribose-phosphate-thymine
B
deoxyribose-phosphate uracil
C
ribose-phosphate-uracil
D
deoxyribose-phosphate-cytosine
11) The structure of DNA can best be described as
A
a double helix
B
all of these
C
spiral staircase
D
a twisted ladder
12) Who first discovered the structure of DNA?
A
Holmes and Watson
B
Watson and Crick
C
Robert Hooke
D
Coach Korth
*select an answer for all questions
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