Question 1

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) A) and E)
G) B) and D)

Question 2

Genes produce their products __________.

Accepted Answer

A)   as their products are needed or not
B)   at a steady rate all the time
C)   only when the appropriate hormone is present
D)   when the transcription activator is inhibited by an extracellular signalE) A) and D)
F) A) and C)

Question 3

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) C) and D)
F) None of the above

Question 4

DNA replication is called semiconservative because __________.

Accepted Answer

A)   each daughter DNA consists of one new helix and one old helix
B)   each daughter DNA consists of one new nucleotide and one old nucleotide
C)   each daughter DNA consists of one new chromatid and one old chromatid
D)   each daughter cell receives one new chromatid and one old chromatid
E)   each daughter cell receives one new helix and one old helixF) A) and B)
G) A) and D)

Question 5

Copying genetic information from DNA into RNA is called __________;using the information contained in mRNA to make a polypeptide is called __________.

Accepted Answer

A)   transcription;translation
B)   translation;transcription
C)   DNA replication;translation
D)   DNA duplication;transcription
E)   DNA translation;RNA transcriptionF) B) and E)
G) C) and D)

Question 6

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) A) and E)
G) A) and D)

Question 7

Chromatin shortens and thickens,coiling into compact rods during __________ of mitosis.

Accepted Answer

A)   telophase
B)   anaphase
C)   interphase
D)   prophase
E)   metaphaseF) None of the above
G) B) and D)

Question 8

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 9

Mitosis is responsible for embryonic development and tissue growth.

Accepted Answer

A) True 
 B)False

Question 10

Which of these is not found in the karyotype of a normal human male?

Accepted Answer

A)   46 chromosomes
B)   23 pairs of homologous chromosomes
C)   X and Y chromosomes
D)   46 chromatids
E)   92 DNA moleculesF) A) and B)
G) All of the above

Question 11

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 E)
G) A) and C)

Question 12

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 E)
G) A) and E)

Question 13

The alleles possessed by all members of a population collectively are called the __________.

Accepted Answer

A)   species DNA
B)   population DNA
C)   gene pool
D)   genetic drift
E)   phenotypeF) C) and D)
G) B) and C)

Question 14

__________ are turned on or off by regulatory proteins in accordance with changing needs for the __________ they encode.

Accepted Answer

A)   Enzymes;products
B)   Ribosomes;proteins
C)   Genes;proteins
D)   Proteins;genes
E)   Genes;ribosomesF) B) and D)
G) B) and C)

Question 15

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

Accepted Answer

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

Question 16

Which of the following is the template for transcription?

Accepted Answer

A)   The molecule that carries codons
B)   The molecule that carries anticodons
C)   The molecule that carries base triplets
D)   The molecule that carries amino acids
E)   The molecule that carries tRNAF) C) and E)
G) C) and D)

Question 17

The stage at which chromosomes aggregate along the equator of a cell is __________.

Accepted Answer

A)   prophase
B)   metaphase
C)   anaphase
D)   telophase
E)   interphaseF) B) and E)
G) D) and E)

Question 18

Although all cells synthesize phospholipids,there are no genes for phospholipids.

Accepted Answer

A) True 
 B)False

Question 19

Anticodons,codons,and base triplets correspond to __________ respectively.

Accepted Answer

A)   tRNA,DNA,and mRNA
B)   DNA,tRNA,and mRNA
C)   tRNA,mRNA,and DNA
D)   DNA,RNA,and pre-mRNA
E)   RNA,DNA,and pre-mRNAF) None of the above
G) A) and E)

Question 20

A mutation is __________.

Accepted Answer

A)   a change in size or shape of a cell
B)   a beneficial change in DNA structure
C)   a harmful change in DNA structure
D)   a neutral change in DNA structure
E)   a change in DNA structure that might be beneficial,harmful,or neutralF) D) and E)
G) B) and E)

Exam 4: Genetics of Cellular Function

Anticodons,codons,and base triplets correspond to __________ respectively.

Correct AnswerverifiedShow Answer

Genes produce their products __________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Chromatin shortens and thickens,coiling into compact rods during __________ of mitosis.

Correct AnswerverifiedShow Answer

__________ are turned on or off by regulatory proteins in accordance with changing needs for the __________ they encode.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

DNA replication is called semiconservative because __________.

Correct AnswerverifiedShow Answer

The alleles possessed by all members of a population collectively are called the __________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A mutation is __________.

Correct AnswerverifiedShow Answer

The stage at which chromosomes aggregate along the equator of a cell is __________.

Correct AnswerverifiedShow Answer

Which of these is not found in the karyotype of a normal human male?

Correct AnswerverifiedShow Answer

Copying genetic information from DNA into RNA is called __________;using the information contained in mRNA to make a polypeptide is called __________.

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

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

Cell division is stimulated by __________ and suppressed by __________.

Correct AnswerverifiedShow Answer

Mitosis is responsible for embryonic development and tissue growth.

Correct AnswerverifiedShow Answer

Which of the following is the template for transcription?

Correct AnswerverifiedShow Answer

Although all cells synthesize phospholipids,there are no genes for phospholipids.

Correct AnswerverifiedShow Answer

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

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are turned on or off by regulatory proteins in accordance with changing needs for the they encode.

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Copying genetic information from DNA into RNA is called ;using the information contained in mRNA to make a polypeptide is called .

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Cell division is stimulated by and suppressed by .

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