ASU BIO 340 Exam 3 Recitation Questions
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RNA differs from DNA in that it:
a. is usually found as a single-stranded
d. all of the above molecule in cells
b. contains uracil
c. contains ribose sugar
d. all of the above
The correct order of steps in a PCR cycle
is:
d. Denaturation, annealing, extension a. Extension, denaturation, annealing
b. Annealing, extension, denaturation
c. Annealing, denaturation, extension
d. Denaturation, annealing, extension
The goal of the polymerase chain reac-
tion (PCR) is to:
c. Amplify a small amount of DNA se- a. Sequence DNA
quence b. Digest bacterial plasmids
c. Amplify a small amount of DNA se-
quence
d. Cleave DNA molecules
Which of the following is incorrect?
a. Cytosine pairs with Guanine
b. Two strands of DNA double helix are
b. Two strands of DNA double helix are
held together by covalent bonds
held together by covalent bonds
c. Nucleotides in DNA consist of deoxyri-
(hydrogen bonds, not covalent bonds)
bose sugar, phosphate group and a ni-
trogenous base
d. Adenine pairs with Thymine
What are the 3 main components of a
DNA nucleotide?
d. A phosphate group, a nitrogenous
base, a deoxyribose a. An alcohol functional group, a nitroge-
nous base, a ribose
b. An alcohol functional group, a nitroge-
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, ASU BIO 340 Exam 3 Recitation Questions
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nous base, a deoxyribose
c. A phosphate group, a nitrogenous
base, a ribose
d. A phosphate group, a nitrogenous
base, a deoxyribose
At which temperature does a DNA dou-
ble helix denature?
d. 95 a. 15
b. 85
c. 75
d. 95
Cytosines and guanines are paired by
b. False
2 hydrogen bonds, while adenines and
thymines are paired by 3 hydrogen
(Cytosines and Guanines are paired by
bonds.
3 hydrogen bonds)
(Adenines and Thymines are paired by 2
a. True
hydrogen bonds)
b. False
Hydrogen bonds are weaker than cova-
lent bonds. During PCR, hydrogen bonds
are broken during the denaturation step.
a. True
a. True
b. False
Choose the pair of molecules that are
most alike in their nucleotide sequence:
b. mRNA and coding DNA strand a. mRNA and template DNA strand
b. mRNA and coding DNA strand
c. tRNA and mRNA
d. none of the above
c. The thymines will be substituted with
uracils.
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RNA differs from DNA in that it:
a. is usually found as a single-stranded
d. all of the above molecule in cells
b. contains uracil
c. contains ribose sugar
d. all of the above
The correct order of steps in a PCR cycle
is:
d. Denaturation, annealing, extension a. Extension, denaturation, annealing
b. Annealing, extension, denaturation
c. Annealing, denaturation, extension
d. Denaturation, annealing, extension
The goal of the polymerase chain reac-
tion (PCR) is to:
c. Amplify a small amount of DNA se- a. Sequence DNA
quence b. Digest bacterial plasmids
c. Amplify a small amount of DNA se-
quence
d. Cleave DNA molecules
Which of the following is incorrect?
a. Cytosine pairs with Guanine
b. Two strands of DNA double helix are
b. Two strands of DNA double helix are
held together by covalent bonds
held together by covalent bonds
c. Nucleotides in DNA consist of deoxyri-
(hydrogen bonds, not covalent bonds)
bose sugar, phosphate group and a ni-
trogenous base
d. Adenine pairs with Thymine
What are the 3 main components of a
DNA nucleotide?
d. A phosphate group, a nitrogenous
base, a deoxyribose a. An alcohol functional group, a nitroge-
nous base, a ribose
b. An alcohol functional group, a nitroge-
1/7
, ASU BIO 340 Exam 3 Recitation Questions
Study online at https://quizlet.com/_8htamd
nous base, a deoxyribose
c. A phosphate group, a nitrogenous
base, a ribose
d. A phosphate group, a nitrogenous
base, a deoxyribose
At which temperature does a DNA dou-
ble helix denature?
d. 95 a. 15
b. 85
c. 75
d. 95
Cytosines and guanines are paired by
b. False
2 hydrogen bonds, while adenines and
thymines are paired by 3 hydrogen
(Cytosines and Guanines are paired by
bonds.
3 hydrogen bonds)
(Adenines and Thymines are paired by 2
a. True
hydrogen bonds)
b. False
Hydrogen bonds are weaker than cova-
lent bonds. During PCR, hydrogen bonds
are broken during the denaturation step.
a. True
a. True
b. False
Choose the pair of molecules that are
most alike in their nucleotide sequence:
b. mRNA and coding DNA strand a. mRNA and template DNA strand
b. mRNA and coding DNA strand
c. tRNA and mRNA
d. none of the above
c. The thymines will be substituted with
uracils.
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