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lOMoAR cPSD| 42289429
TEST BANK FOR HUETHER AND
sh
MCCANCES
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UNDERSTANDING PATHOPHYSIOLOGY 2ND
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tz
sh
EDITION BY POWER KEAN.
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la
sh
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tz
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Sp
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sh
Sp
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tz
sh
Sp
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tz
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la
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a
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, lOMoAR cPSD| 42289429
ne
sh
Chapter 02: Genes and Genetic Diseases
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Power-Kean et al: Huether and McCance’s Understanding Pathophysiology, Second
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Canadian Edition
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sh
Sp
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MULTIPLE CHOICE
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Sp
1. A nurse recalls that the basic components of DNA are:
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a. pentose sugars and four phosphate bases.
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b. a phosphate molecule, deoxyribose, and four nitrogenous bases.
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c. adenine, guanine, and purine.
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d. codons, oxygen, and cytosine.
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ANS: B
The three basic components of DNA are deoxyribose; a phosphate molecule; and four types of
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nitrogenous, not phosphate, bases. DNA does not contain condone.
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DIF: Cognitive Level: Remember REF: Definitions: Composition and Structure of DNA TOP:
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Physiological Integrity
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2. Which of the following mutations have the most significant effect on protein synthesis? a.
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Base pair substitutions
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Sp
b. Silent mutations
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c. Intron mutations
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d. Frameshift mutations
ANS: D
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The frameshift mutation involves the insertion or deletion of one or more base pairs of the
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DNA molecule. This greatly alters the amino acid sequence, which affects protein synthesis.
The base pair substitution is a type of mutation in which one base pair replaces another. Silent
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mutations do not change amino acids or protein synthesis. Intron mutations are part of RNA
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sequencing. sh
Sp
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DIF: Cognitive Level: Remember REF: Mutation TOP: Physiological Integrity
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3. The base components of DNA are:
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a. A, G, C, and U.
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b. P, G, C, and T.
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c. A, G, C, and T.
a
d. X, XX, XY, and YY.
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ANS: C
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The four base components of DNA are cytosine, thymine, adenine, and guanine, and they are
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commonly represented by their first letters (C, T, A, and G). There are no genetic components
identified as P or U. The letters X, XX, XY, and YY are components of human chromosomes.
la
sh
Sp
la
Sp
lOMoAR cPSD| 42289429
TEST BANK FOR HUETHER AND
sh
MCCANCES
ne
UNDERSTANDING PATHOPHYSIOLOGY 2ND
la
tz
sh
EDITION BY POWER KEAN.
Sp
ne
la
sh
Sp
ne
la
tz
sh
Sp
ne
la
sh
Sp
ne
la
tz
sh
Sp
ne
la
sh
Sp
ne
la
tz
sh
Sp
ne
la
sh
Sp
ne
a
tz
l
sh
Sp
ne
la
sh
Sp
la
Sp
, lOMoAR cPSD| 42289429
ne
sh
Chapter 02: Genes and Genetic Diseases
ne
Power-Kean et al: Huether and McCance’s Understanding Pathophysiology, Second
la
Canadian Edition
tz
sh
Sp
ne
la
MULTIPLE CHOICE
sh
Sp
1. A nurse recalls that the basic components of DNA are:
ne
a. pentose sugars and four phosphate bases.
la
b. a phosphate molecule, deoxyribose, and four nitrogenous bases.
tz
c. adenine, guanine, and purine.
sh
d. codons, oxygen, and cytosine.
Sp
ne
ANS: B
The three basic components of DNA are deoxyribose; a phosphate molecule; and four types of
la
nitrogenous, not phosphate, bases. DNA does not contain condone.
sh
Sp
DIF: Cognitive Level: Remember REF: Definitions: Composition and Structure of DNA TOP:
ne
Physiological Integrity
la
2. Which of the following mutations have the most significant effect on protein synthesis? a.
tz
Base pair substitutions
sh
Sp
b. Silent mutations
ne
c. Intron mutations
la
d. Frameshift mutations
ANS: D
sh
The frameshift mutation involves the insertion or deletion of one or more base pairs of the
Sp
ne
DNA molecule. This greatly alters the amino acid sequence, which affects protein synthesis.
The base pair substitution is a type of mutation in which one base pair replaces another. Silent
la
mutations do not change amino acids or protein synthesis. Intron mutations are part of RNA
tz
sequencing. sh
Sp
ne
DIF: Cognitive Level: Remember REF: Mutation TOP: Physiological Integrity
la
3. The base components of DNA are:
sh
a. A, G, C, and U.
Sp
b. P, G, C, and T.
ne
c. A, G, C, and T.
a
d. X, XX, XY, and YY.
tz
ANS: C
l
sh
Sp
The four base components of DNA are cytosine, thymine, adenine, and guanine, and they are
ne
commonly represented by their first letters (C, T, A, and G). There are no genetic components
identified as P or U. The letters X, XX, XY, and YY are components of human chromosomes.
la
sh
Sp
la
Sp
