Question 1

How does the transcription of structural genes in an inducible operon occur?

Accepted Answer

A)  It occurs continuously in the cell. 
B)  It starts when the pathway's substrate is present. 
C)  It starts when the pathway's product is present. 
D)  It stops when the pathway's product is present. 
A)  It occurs continuously in the cell. 
B)  It starts when the pathway's substrate is present. 
C)  It starts when the pathway's product is present. 
D)  It stops when the pathway's product is present.

Question 2

Which of the following functions does the product of the p53 gene carry out?

Accepted Answer

A)  It inhibits the cell cycle. 
B)  It slows down the rate of DNA replication by interfering with the binding of DNA polymerase. 
C)  It causes cells to reduce expression of genes involved in DNA repair. 
D)  It allows cells to pass on mutations due to DNA damage. 
A)  It inhibits the cell cycle. 
B)  It slows down the rate of DNA replication by interfering with the binding of DNA polymerase. 
C)  It causes cells to reduce expression of genes involved in DNA repair. 
D)  It allows cells to pass on mutations due to DNA damage.

Question 3

Gene expression is often assayed by measuring the level of mRNA produced from a gene. What level of the control of gene expression can by analyzed by this type of assay?

Accepted Answer

A)  replication control 
B)  transcriptional control 
C)  alternative splicing 
D)  translational control 
A)  replication control 
B)  transcriptional control 
C)  alternative splicing 
D)  translational control

Question 4

Which of the following statements describes a cell that is considered to be differentiated?

Accepted Answer

A)  The cell replicates by the process of mitosis. 
B)  The cell loses connections to the surrounding cells. 
C)  The cell produces proteins specific to a particular cell type. 
D)  The cell appears to be different from the surrounding cells. 
A)  The cell replicates by the process of mitosis. 
B)  The cell loses connections to the surrounding cells. 
C)  The cell produces proteins specific to a particular cell type. 
D)  The cell appears to be different from the surrounding cells.

Question 5

Cell differentiation always involves

Accepted Answer

A)  transcription of the myoD gene. 
B)  the movement of cells. 
C)  the production of tissue-specific proteins. 
D)  the selective loss of certain genes from the genome. 
A)  transcription of the myoD gene. 
B)  the movement of cells. 
C)  the production of tissue-specific proteins. 
D)  the selective loss of certain genes from the genome.

Question 6

Imagine that you've isolated a yeast mutant that contains histones resistant to acetylation. What phenotype would you predict for this mutant?

Accepted Answer

A)  The mutant will grow rapidly. 
B)  The mutant will require galactose for growth. 
C)  The mutant will show decreased levels of gene expression. 
D)  The mutant will show increased levels of gene expression. 
A)  The mutant will grow rapidly. 
B)  The mutant will require galactose for growth. 
C)  The mutant will show decreased levels of gene expression. 
D)  The mutant will show increased levels of gene expression.

Exam 18: Regulation of Gene Expression

How does the transcription of structural genes in an inducible operon occur?

Which of the following functions does the product of the p53 gene carry out?

Gene expression is often assayed by measuring the level of mRNA produced from a gene. What level of the control of gene expression can by analyzed by this type of assay?

Which of the following statements describes a cell that is considered to be differentiated?

Cell differentiation always involves

Imagine that you've isolated a yeast mutant that contains histones resistant to acetylation. What phenotype would you predict for this mutant?

Evolution, the Themes of Biology, and Scientific Inquiry

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Viruses

DNA Tools and Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Vascular Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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