Question 1

The most common way for cells to control gene expression is by controlling

Accepted Answer

A)  translation. 
B)  transcription. 
C)  spacer DNA frequency. 
D)  mutation. 
A)  translation. 
B)  transcription. 
C)  spacer DNA frequency. 
D)  mutation.

Question 2

A repressor protein

Accepted Answer

A)  prevents DNA replication. 
B)  prevents the expression of certain genes. 
C)  is the same as an operator sequence. 
D)  helps RNA begin transcription. 
A)  prevents DNA replication. 
B)  prevents the expression of certain genes. 
C)  is the same as an operator sequence. 
D)  helps RNA begin transcription.

Question 3

Proteins found in the blood respond to blood vessel damage by clumping together forming a clot that physically blocks the hole in the vessel and preventing further blood loss. If clotting proteins were active all the time, they would create clots throughout your circulatory system. Which of the following would be the most efficient way for the body to regulate the expression of the proteins involved in clotting?

Accepted Answer

A)  Produce and store the clotting protein in an inactive form. When the protein is needed, use another protein to activate the clotting protein. 
B)  Use a repressor protein to keep clotting genes turned off until they are needed. 
C)  Tightly package the genes for clotting proteins so that they cannot be accessed by RNA polymerase unless needed. 
D)  Constantly make the clotting proteins, but then break them down instantly after translation if they are not needed. 
A)  Produce and store the clotting protein in an inactive form. When the protein is needed, use another protein to activate the clotting protein. 
B)  Use a repressor protein to keep clotting genes turned off until they are needed. 
C)  Tightly package the genes for clotting proteins so that they cannot be accessed by RNA polymerase unless needed. 
D)  Constantly make the clotting proteins, but then break them down instantly after translation if they are not needed.

Question 4

DNA is _______ [more or less?] tightly packaged during interphase when most gene expression occurs.

Accepted Answer

The answer of DNA is _______ [more or less?] tightly...

Question 5

_______ genes are master switches that control the expression of other genes.

Accepted Answer

The answer of _______ genes are master switches that control...

Question 6

Which of the following does not correctly state a difference between prokaryotic and eukaryotic DNA organization?

Accepted Answer

A)  Prokaryotic DNA groups genes with related functions together whereas eukaryotic DNA does not. 
B)  Prokaryotic DNA has few noncoding regions, unlike eukaryotic DNA. 
C)  Eukaryotic DNA is usually arranged more simply than prokaryotic DNA. 
D)  Eukaryotic DNA contains more spacer regions than prokaryotic DNA. 
A)  Prokaryotic DNA groups genes with related functions together whereas eukaryotic DNA does not. 
B)  Prokaryotic DNA has few noncoding regions, unlike eukaryotic DNA. 
C)  Eukaryotic DNA is usually arranged more simply than prokaryotic DNA. 
D)  Eukaryotic DNA contains more spacer regions than prokaryotic DNA.

Exam 14: Control of Gene Expression

The most common way for cells to control gene expression is by controlling

A repressor protein

DNA is _______ [more or less?] tightly packaged during interphase when most gene expression occurs.

_______ genes are master switches that control the expression of other genes.

Which of the following does not correctly state a difference between prokaryotic and eukaryotic DNA organization?

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

The Nervous System

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Ecosystems

Global Change

Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Feeding a Hungry Planet

Building a Sustainable Society

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