Question 1

Which of the following is not found in RNA?

Accepted Answer

A)  Thymine
B)  Uracil
C)  Ribose
D)  GuanineE) None of the above
F) B) and D)

Question 2

The gene coding for a polypeptide made of 51 amino acids would have a minimum of _________ bases.

Accepted Answer

A)  20
B)  51
C)  102
D)  153E) A) and B)
F) None of the above

Question 3

Cell division is stimulated by __________ and suppressed by __________.

Accepted Answer

A)  mitosis; cytokinesis
B)  mitosis; contact inhibition
C)  cell size; cytokinesis
D)  growth factors; contact inhibition
E)  cell size; contact inhibitionF) D) and E)
G) C) and E)

Question 4

Transcription occurs in the __________,but most translation occurs in the __________.

Accepted Answer

A)  nucleus; cytoplasm
B)  nucleus; nucleolus
C)  cytoplasm; nucleus
D)  nucleolus; cytoplasm
E)  nucleolus; rough endoplasmic reticulumF) B) and C)
G) A) and D) A

Question 5

DNA is composed of double-ring nitrogenous bases,whereas RNA is composed of single-ring nitrogenous bases.

Accepted Answer

A) True 
 B)False  False

Question 6

All of the body's nonreproductive cells,called __________,usually have 23 pairs of chromosomes and are thus called __________ cells.

Accepted Answer

A)  germ cells; haploid
B)  germ cells; diploid
C)  somatic cells; haploid
D)  somatic cells; diploidE) A) and B)
F) A) and C)

Question 7

The human genome consists of approximately __________ pairs of nucleotides.

Accepted Answer

A)  3 billion
B)  3 million
C)  300,000
D)  3000E) B) and C)
F) A) and B)

Question 8

In familial hypercholesterolemia,individuals with two abnormal alleles die of heart attacks in childhood,those with only one abnormal allele typically die as young adults,and those with two normal alleles have normal life expectancies.This exemplifies __________.

Accepted Answer

A)  penetrance
B)  codominance
C)  pleiotropy
D)  complete dominance
E)  incomplete dominanceF) B) and E)
G) C) and D)

Question 9

Mitosis is responsible for embryonic development and tissue growth.

Accepted Answer

A) True 
 B)False

Question 10

Eye color is caused by genes at multiple loci.This phenomenon is called __________.

Accepted Answer

A)  pleiotropy
B)  sex linkage
C)  polygenic inheritance
D)  incomplete dominance
E)  multiple carriersF) All of the above
G) A) and E)

Question 11

The allele for cleft chin (C) is dominant to the allele for uncleft chin (c) .A male and female who are both heterozygous for cleft chin have a child.What is the chance that this child will have an uncleft chin?

Accepted Answer

A)  0%
B)  25%
C)  50%
D)  75%
E)  100%F) C) and D)
G) All of the above

Question 12

Cells undergo division when which of the following conditions have been met?

Accepted Answer

A)  They have grown large enough and replicated their DNA
B)  They are still growing and have ample nutrients
C)  They are stimulated by growth factors and neighboring cells are squeezed tightly against them
D)  They have grown large enough and neighboring cells are squeezed tightly against themE) None of the above
F) A) and C)

Question 13

After translation,a protein may undergo structural changes called __________ modifications.

Accepted Answer

A)  splicing
B)  posttranscriptional
C)  posttranslational
D)  polyribosomal
E)  secretoryF) C) and D)
G) A) and B)

Question 14

A gene can be defined as an information-containing segment of RNA that codes for the production of a polypeptide.

Accepted Answer

A) True 
 B)False

Question 15

DNA is a polymer of __________,which consist of a sugar,a phosphate group,and a __________.

Accepted Answer

A)  amino acids; nucleotide
B)  nucleic acids; nucleotide
C)  nucleotides; nitrogenous base
D)  nucleotides; nucleic acid
E)  proteins; nucleotideF) C) and E)
G) C) and D)

Question 16

Germ cells have __________ unpaired chromosomes and are thus called __________ cells.

Accepted Answer

A)  23; somatic
B)  23; haploid
C)  23; diploid
D)  46; somatic
E)  46; diploidF) A) and E)
G) A) and D)

Question 17

If one allele is not phenotypically expressed in the presence of another,we say that it is a(an) __________ allele.

Accepted Answer

A)  homozygous
B)  heterozygous
C)  recessive
D)  dominant
E)  suppressedF) A) and E)
G) A) and D)

Question 18

If a DNA molecule were known to be 22% thymine (T) ,what would be the percentage of guanine (G) present?

Accepted Answer

A)  8%
B)  11%
C)  22%
D)  28%
E)  78%F) C) and D)
G) C) and E) D

Question 19

Many genes occur in alternative forms called alleles.

Accepted Answer

A) True 
 B)False

Question 20

Phenotype is the result of genetic influences only.

Accepted Answer

A) True 
 B)False

Exam 4: Genetics of Cellular Function

Which of the following is not found in RNA?

Correct AnswerverifiedShow Answer

The gene coding for a polypeptide made of 51 amino acids would have a minimum of _________ bases.

Correct AnswerverifiedShow Answer

Cell division is stimulated by __________ and suppressed by __________.

Correct AnswerverifiedShow Answer

Transcription occurs in the __________,but most translation occurs in the __________.

Correct AnswerverifiedA

DNA is composed of double-ring nitrogenous bases,whereas RNA is composed of single-ring nitrogenous bases.

Correct AnswerverifiedFalse

All of the body's nonreproductive cells,called __________,usually have 23 pairs of chromosomes and are thus called __________ cells.

Correct AnswerverifiedShow Answer

The human genome consists of approximately __________ pairs of nucleotides.

Correct AnswerverifiedShow Answer

In familial hypercholesterolemia,individuals with two abnormal alleles die of heart attacks in childhood,those with only one abnormal allele typically die as young adults,and those with two normal alleles have normal life expectancies.This exemplifies __________.

Correct AnswerverifiedShow Answer

Mitosis is responsible for embryonic development and tissue growth.

Correct AnswerverifiedShow Answer

Eye color is caused by genes at multiple loci.This phenomenon is called __________.

Correct AnswerverifiedShow Answer

The allele for cleft chin (C) is dominant to the allele for uncleft chin (c) .A male and female who are both heterozygous for cleft chin have a child.What is the chance that this child will have an uncleft chin?

Correct AnswerverifiedShow Answer

Cells undergo division when which of the following conditions have been met?

Correct AnswerverifiedShow Answer

After translation,a protein may undergo structural changes called __________ modifications.

Correct AnswerverifiedShow Answer

A gene can be defined as an information-containing segment of RNA that codes for the production of a polypeptide.

Correct AnswerverifiedShow Answer

DNA is a polymer of __________,which consist of a sugar,a phosphate group,and a __________.

Correct AnswerverifiedShow Answer

Germ cells have __________ unpaired chromosomes and are thus called __________ cells.

Correct AnswerverifiedShow Answer

If one allele is not phenotypically expressed in the presence of another,we say that it is a(an) __________ allele.

Correct AnswerverifiedShow Answer

If a DNA molecule were known to be 22% thymine (T) ,what would be the percentage of guanine (G) present?

Correct AnswerverifiedD

Many genes occur in alternative forms called alleles.

Correct AnswerverifiedShow Answer

Phenotype is the result of genetic influences only.

Correct AnswerverifiedShow Answer

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Cell division is stimulated by and suppressed by .

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Transcription occurs in the ,but most translation occurs in the .

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A

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False

All of the body's nonreproductive cells,called ,usually have 23 pairs of chromosomes and are thus called cells.

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DNA is a polymer of ,which consist of a sugar,a phosphate group,and a .

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Germ cells have unpaired chromosomes and are thus called cells.

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D

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