Question 1

In protein synthesis, RNA synthesis is also called

Accepted Answer

A)  transcription 
B)  translation 
C)  transformation 
D)  transmutation 
E)  transsubstantiation 
A)  transcription 
B)  translation 
C)  transformation 
D)  transmutation 
E)  transsubstantiation

Question 2

Which of the following master genes determines the sex of a mammal?

Accepted Answer

A)  SHY 
B)  ART 
C)  SRY 
D)  PAX 
E)  FOX 
A)  SHY 
B)  ART 
C)  SRY 
D)  PAX 
E)  FOX

Question 3

For eukaryotes, transcription takes place in the

Accepted Answer

A)  nucleus. 
B)  nucleolus. 
C)  cytoplasm. 
D)  plasma membrane. 
E)  nucleus and cytoplasm. 
A)  nucleus. 
B)  nucleolus. 
C)  cytoplasm. 
D)  plasma membrane. 
E)  nucleus and cytoplasm.

Question 4

In a prokaryotic cell,

Accepted Answer

A)  transcription and translation occur simultaneously. 
B)  transcription occurs in the nucleus while translation takes place in the cytoplasm. 
C)  translation occurs before transcription. 
D)  transcription and translation are separated in time and place. 
E)  transcription and translation are considerably slower than in eukaryotic cells. 
A)  transcription and translation occur simultaneously. 
B)  transcription occurs in the nucleus while translation takes place in the cytoplasm. 
C)  translation occurs before transcription. 
D)  transcription and translation are separated in time and place. 
E)  transcription and translation are considerably slower than in eukaryotic cells.

Question 5

Methylation

Accepted Answer

A)  suppresses gene expression. 
B)  slows transcription. 
C)  increases the rate of translation. 
D)  inhibits the activity of RNA polymerase. 
E)  activates introns. 
A)  suppresses gene expression. 
B)  slows transcription. 
C)  increases the rate of translation. 
D)  inhibits the activity of RNA polymerase. 
E)  activates introns.

Question 6

Which of the following is NOT true of the genetic code?

Accepted Answer

A)  It is the same for almost all organisms. 
B)  There are 64 codons. 
C)  It has within it 5 stop codons. 
D)  Most amino acids have more than one codon that codes for it. 
E)  Each codon is made up of three nucleotides. 
A)  It is the same for almost all organisms. 
B)  There are 64 codons. 
C)  It has within it 5 stop codons. 
D)  Most amino acids have more than one codon that codes for it. 
E)  Each codon is made up of three nucleotides.

Question 7

How many nucleotides compose one codon?

Accepted Answer

A)  2 
B)  3 
C)  5 
D)  6 
E)  16 
A)  2 
B)  3 
C)  5 
D)  6 
E)  16

Question 8

The first amino acid that is assembled in translation is

Accepted Answer

A)  methionine 
B)  valine 
C)  lysine 
D)  phenylalanine 
E)  glycine 
A)  methionine 
B)  valine 
C)  lysine 
D)  phenylalanine 
E)  glycine

Question 9

Sickle-cell anemia has been traced to what type of mutation?

Accepted Answer

A)  frameshift 
B)  base-pair substitution 
C)  mutagenic 
D)  transposable element 
E)  viral 
A)  frameshift 
B)  base-pair substitution 
C)  mutagenic 
D)  transposable element 
E)  viral

Question 10

In mammals, X chromosome inactivation results in

Accepted Answer

A)  a total inactivation of both female X chromosomes. 
B)  only the inactivation of the paternal X chromosome in females. 
C)  only the inactivation of the maternal X chromosome in females 
D)  the inactivation of either the paternal X from the father or the maternal X in females. 
E)  the inactivation of the maternal X chromosome in males. 
A)  a total inactivation of both female X chromosomes. 
B)  only the inactivation of the paternal X chromosome in females. 
C)  only the inactivation of the maternal X chromosome in females 
D)  the inactivation of either the paternal X from the father or the maternal X in females. 
E)  the inactivation of the maternal X chromosome in males.

Question 11

Examine the figure above and answer the following question(s). In this representation of transcription, strand # 2 represents

Accepted Answer

A)  the coding DNA strand. 
B)  the transcript. 
C)  the template for the coding DNA strand. 
D)  the coded RNA strand. 
E)  both the transcript and the coded RNA strand. 
A)  the coding DNA strand. 
B)  the transcript. 
C)  the template for the coding DNA strand. 
D)  the coded RNA strand. 
E)  both the transcript and the coded RNA strand.

Question 12

In sickle cell anemia, glutamic acid is substituted for

Accepted Answer

A)  valine 
B)  lysine 
C)  serine 
D)  arginine 
E)  phenylalanine 
A)  valine 
B)  lysine 
C)  serine 
D)  arginine 
E)  phenylalanine

Question 13

When you miss a class and copy a fellow student's class notes, it is analogous to

Accepted Answer

A)  mutation of a gene. 
B)  translation of mRNA. 
C)  transcription of DNA. 
D)  protein modification. 
E)  replication of DNA. 
A)  mutation of a gene. 
B)  translation of mRNA. 
C)  transcription of DNA. 
D)  protein modification. 
E)  replication of DNA.

Question 14

As the polypeptide is elongating in translation, what is the ribosome doing?

Accepted Answer

A)  removing incorrectly added amino acids. 
B)  moving along the mRNA transcript bonding amino acids to each other. 
C)  travelling back and forth between the nucleus and the growing polypeptide with information on which amino acids to add. 
D)  removing the non-coding introns. 
E)  doing more than one of these functions. 
A)  removing incorrectly added amino acids. 
B)  moving along the mRNA transcript bonding amino acids to each other. 
C)  travelling back and forth between the nucleus and the growing polypeptide with information on which amino acids to add. 
D)  removing the non-coding introns. 
E)  doing more than one of these functions.

Question 15

Frameshift mutations may involve

Accepted Answer

A)  substitution of nucleotides. 
B)  substitution of codons. 
C)  substitution of amino acids. 
D)  insertion of one to several base pairs. 
E)  all of these. 
A)  substitution of nucleotides. 
B)  substitution of codons. 
C)  substitution of amino acids. 
D)  insertion of one to several base pairs. 
E)  all of these.

Question 16

Which RNA is the first to be activated in the process of protein synthesis?

Accepted Answer

A)  mRNA 
B)  tRNA 
C)  rRNA 
D)  dRNA 
E)  sRNA 
A)  mRNA 
B)  tRNA 
C)  rRNA 
D)  dRNA 
E)  sRNA

Question 17

In a eukarytote, DNA is transcribed in the

Accepted Answer

A)  mitochondria. 
B)  cytoplasm. 
C)  ribosomes. 
D)  nucleus. 
E)  endoplasmic reticulum. 
A)  mitochondria. 
B)  cytoplasm. 
C)  ribosomes. 
D)  nucleus. 
E)  endoplasmic reticulum.

Question 18

How many coding codons are there?

Accepted Answer

A)  4 
B)  20 
C)  30 
D)  60 
E)  64 
A)  4 
B)  20 
C)  30 
D)  60 
E)  64

Question 19

Match between columns
                        Premises: site at which RNA polymerase binds and initiates transcription
complex with proteins to form ribosomes
guided and catalyzed by RNA polymerases
sites for polypeptide assembly
a mRNA code for one amino acid
all of the mRNA codons
RNA-directed synthesis of polypeptide chains
occurs when stop codons are read
binds to ribosomes to begin translation
a tRNA triplet complementary to a mRNA codon

Accepted Answer

The Answer of genetic code and rRNA and anticodon and is...

Question 20

Which of the following is a master gene that controls eye development?

Accepted Answer

A)  PAX6 
B)  FOXP2 
C)  ICU 
D)  SRY 
E)  STP 
A)  PAX6 
B)  FOXP2 
C)  ICU 
D)  SRY 
E)  STP

Exam 7: Gene Expression and Control

In protein synthesis, RNA synthesis is also called

Which of the following master genes determines the sex of a mammal?

For eukaryotes, transcription takes place in the

In a prokaryotic cell,

Methylation

Which of the following is NOT true of the genetic code?

How many nucleotides compose one codon?

The first amino acid that is assembled in translation is

Sickle-cell anemia has been traced to what type of mutation?

In mammals, X chromosome inactivation results in

Examine the figure above and answer the following question(s). In this representation of transcription, strand # 2 represents

In sickle cell anemia, glutamic acid is substituted for

When you miss a class and copy a fellow student's class notes, it is analogous to

As the polypeptide is elongating in translation, what is the ribosome doing?

Frameshift mutations may involve

Which RNA is the first to be activated in the process of protein synthesis?

In a eukarytote, DNA is transcribed in the

How many coding codons are there?

Which of the following is a master gene that controls eye development?

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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