Question 1

Chromosomes of eukaryotic DNA must have

Accepted Answer

A)  DNA sequences that make up telomeres and centromeres. 
B)  proteins that are centromeres and DNA that form telomeres. 
C)  a 5´ G cap. 
D)  an inactivation center. 
E)  None of the above 
A)  DNA sequences that make up telomeres and centromeres. 
B)  proteins that are centromeres and DNA that form telomeres. 
C)  a 5´ G cap. 
D)  an inactivation center. 
E)  None of the above

Question 2

In bacteria, there is/are _______ RNA polymerase(s) that catalyze the synthesis of RNA from DNA.

Accepted Answer

A)  one 
B)  three 
C)  four 
D)  five 
E)  six 
A)  one 
B)  three 
C)  four 
D)  five 
E)  six

Question 3

At the initiation of translation in eukaryotes,

Accepted Answer

A)  the complex of mRNA and the large ribosomal subunit are formed. 
B)  the anticodon of tRNA charged with methionine binds to mRNA associated with the small ribosomal subunit. 
C)  a Shine-Delgarno sequence on the mRNA is involved. 
D)  the large ribosomal subunit binds to the complex before the methionine-charged tRNA. 
E)  the poly A "tail" of mRNA is directly involved. 
A)  the complex of mRNA and the large ribosomal subunit are formed. 
B)  the anticodon of tRNA charged with methionine binds to mRNA associated with the small ribosomal subunit. 
C)  a Shine-Delgarno sequence on the mRNA is involved. 
D)  the large ribosomal subunit binds to the complex before the methionine-charged tRNA. 
E)  the poly A "tail" of mRNA is directly involved.

Question 4

Viruses that violate the "central dogma" through the use of an enzyme that makes DNA copies of an RNA molecule are called

Accepted Answer

A)  bacteriophage. 
B)  retroviruses. 
C)  RNA viruses. 
D)  DNA viruses. 
E)  enveloped viruses. 
A)  bacteriophage. 
B)  retroviruses. 
C)  RNA viruses. 
D)  DNA viruses. 
E)  enveloped viruses.

Question 5

The formation of a peptide bond between an amino acid at the P site and an amino acid at the A site during translation is catalyzed by

Accepted Answer

A)  the large ribosomal subunit. 
B)  a specialized segment of DNA. 
C)  a specialized segment of RNA. 
D)  the initiation complex. 
E)  initiation factors. 
A)  the large ribosomal subunit. 
B)  a specialized segment of DNA. 
C)  a specialized segment of RNA. 
D)  the initiation complex. 
E)  initiation factors.

Question 6

Exons are

Accepted Answer

A)  translated. 
B)  found in most prokaryotic genes. 
C)  removed during RNA processing. 
D)  Both a and b 
E)  Both a and c 
A)  translated. 
B)  found in most prokaryotic genes. 
C)  removed during RNA processing. 
D)  Both a and b 
E)  Both a and c

Question 7

Which of the following molecules transfers information from the nucleus to the cytoplasm?

Accepted Answer

A)  DNA 
B)  mRNA 
C)  tRNA 
D)  Proteins 
E)  Lipids 
A)  DNA 
B)  mRNA 
C)  tRNA 
D)  Proteins 
E)  Lipids

Question 8

After translation, some proteins are processed by _______, which is cleavage of the protein to make a shortened finished protein.

Accepted Answer

A)  glycation 
B)  glycosylation 
C)  phosphorylation 
D)  proteolysis 
E)  exonuclease digestion 
A)  glycation 
B)  glycosylation 
C)  phosphorylation 
D)  proteolysis 
E)  exonuclease digestion

Question 9

Which of the following statements about pre-mRNA splicing is false?

Accepted Answer

A)  It removes introns. 
B)  It is performed by small nuclear ribonucleoprotein particles (snRNPs). 
C)  It is common in prokaryotes. 
D)  It is directed by consensus sequences. 
E)  It shortens the RNA molecule. 
A)  It removes introns. 
B)  It is performed by small nuclear ribonucleoprotein particles (snRNPs). 
C)  It is common in prokaryotes. 
D)  It is directed by consensus sequences. 
E)  It shortens the RNA molecule.

Question 10

Which of the following statement about glycoproteins is true?

Accepted Answer

A)  They are common in the cytoplasm of eukaryotic cells. 
B)  They are formed after translation of the protein in the cytoplasm. 
C)  They may be incorporated into plasma membranes. 
D)  The sugars are added to the proteins solely in the endoplasmic reticulum. 
E)  Sugar addition to proteins has no signaling function. 
A)  They are common in the cytoplasm of eukaryotic cells. 
B)  They are formed after translation of the protein in the cytoplasm. 
C)  They may be incorporated into plasma membranes. 
D)  The sugars are added to the proteins solely in the endoplasmic reticulum. 
E)  Sugar addition to proteins has no signaling function.

Question 11

An mRNA molecule with several ribosomes attached is called a(n) _______.

Accepted Answer

The answer of An mRNA molecule with several ribosomes attached...

Exam 14: From Dna to Protein: Gene Expression

Chromosomes of eukaryotic DNA must have

In bacteria, there is/are _______ RNA polymerase(s) that catalyze the synthesis of RNA from DNA.

At the initiation of translation in eukaryotes,

Viruses that violate the "central dogma" through the use of an enzyme that makes DNA copies of an RNA molecule are called

The formation of a peptide bond between an amino acid at the P site and an amino acid at the A site during translation is catalyzed by

Exons are

Which of the following molecules transfers information from the nucleus to the cytoplasm?

After translation, some proteins are processed by _______, which is cleavage of the protein to make a shortened finished protein.

Which of the following statements about pre-mRNA splicing is false?

Which of the following statement about glycoproteins is true?

An mRNA molecule with several ribosomes attached is called a(n) _______.

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

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