Question 1

In females, an entire X chromosome is inactivated in each cell. The inactivated X chromosome is called the_________ .

Accepted Answer

The answer of In females, an entire X chromosome is...

Question 2

tRNA is necessary for transcription to occur.

Accepted Answer

A) True 
 B)False

Question 3

List three ways in which an RNA molecule differs from a DNA molecule.

Accepted Answer

RNA is normally single-strande

Question 4

How many bases are in a codon?

Accepted Answer

A)  3 
B)  64 
C)  4 
D)  20 
A)  3 
B)  64 
C)  4 
D)  20

Question 5

Which of the following is NOT a theory of epigenetics explaining how cells can change gene function without changing the DNA base sequence?

Accepted Answer

A)  Modification of chromosomal proteins 
B)  Altering transcription and translation with noncoding RNA 
C)  Mutations causing new beneficial alleles 
D)  Modification of DNA 
A)  Modification of chromosomal proteins 
B)  Altering transcription and translation with noncoding RNA 
C)  Mutations causing new beneficial alleles 
D)  Modification of DNA

Question 6

Which of the following has the fewest nucleotides in its strand?

Accepted Answer

A)  mRNA, having 100 bases 
B)  Protein, with 2 polypeptides, each having 35 amino acids 
C)  mRNA, having 50 codons 
D)  Protein, having 40 amino acids 
E)  mRNA, having 75 nucleotides 
A)  mRNA, having 100 bases 
B)  Protein, with 2 polypeptides, each having 35 amino acids 
C)  mRNA, having 50 codons 
D)  Protein, having 40 amino acids 
E)  mRNA, having 75 nucleotides

Question 7

Both DNA and RNA

Accepted Answer

A)  contain the same four types of nitrogen-containing bases. 
B)  cannot be present in a cell simultaneously. 
C)  contain phosphate groups. 
D)  have the same five-carbon sugars. 
E)  are single-stranded molecules. 
A)  contain the same four types of nitrogen-containing bases. 
B)  cannot be present in a cell simultaneously. 
C)  contain phosphate groups. 
D)  have the same five-carbon sugars. 
E)  are single-stranded molecules.

Question 8

Transcription is the process of

Accepted Answer

A)  synthesizing a DNA molecule from an RNA template. 
B)  synthesizing a protein using information from mRNA. 
C)  assembling an RNA molecule without a template. 
D)  replicating a single-stranded DNA molecule. 
E)  synthesizing an RNA molecule using a DNA template. 
A)  synthesizing a DNA molecule from an RNA template. 
B)  synthesizing a protein using information from mRNA. 
C)  assembling an RNA molecule without a template. 
D)  replicating a single-stranded DNA molecule. 
E)  synthesizing an RNA molecule using a DNA template.

Question 9

Your tongue does NOT grow hair because

Accepted Answer

A)  skin cells have extra DNA that codes for hair proteins. 
B)  the genes for hair proteins have been deleted from the cells of your tongue. 
C)  saliva prevents hair from growing. 
D)  different genes are expressed in different tissues. 
A)  skin cells have extra DNA that codes for hair proteins. 
B)  the genes for hair proteins have been deleted from the cells of your tongue. 
C)  saliva prevents hair from growing. 
D)  different genes are expressed in different tissues.

Question 10

If a tRNA molecule that is specialized for the transfer of the amino acid valine has the anticodon CAG, it will couple with the codon

Accepted Answer

A)  GTC. 
B)  CAG. 
C)  TUG. 
D)  GAC. 
E)  GUC. 
A)  GTC. 
B)  CAG. 
C)  TUG. 
D)  GAC. 
E)  GUC.

Question 11

What does mRNA carry away from the nucleus?

Accepted Answer

A)  Information 
B)  Enzymes 
C)  tRNA 
D)  Ribosomes 
E)  Amino acids 
A)  Information 
B)  Enzymes 
C)  tRNA 
D)  Ribosomes 
E)  Amino acids

Question 12

Describe the three basic steps or processes involved in transcription.

Accepted Answer

First, initiation involves RNA polymeras

Question 13

Each ribosome is specific for a particular type of protein.

Accepted Answer

A) True 
 B)False

Exam 13: Gene Expression and Regulation

In females, an entire X chromosome is inactivated in each cell. The inactivated X chromosome is called the_________ .

tRNA is necessary for transcription to occur.

List three ways in which an RNA molecule differs from a DNA molecule.

How many bases are in a codon?

Which of the following is NOT a theory of epigenetics explaining how cells can change gene function without changing the DNA base sequence?

Which of the following has the fewest nucleotides in its strand?

Both DNA and RNA

Transcription is the process of

Your tongue does NOT grow hair because

If a tRNA molecule that is specialized for the transfer of the amino acid valine has the anticodon CAG, it will couple with the codon

What does mRNA carry away from the nucleus?

Describe the three basic steps or processes involved in transcription.

Each ribosome is specific for a particular type of protein.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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