Question 1

The manufacture of proteins from RNA and amino acids is referred to as:

Accepted Answer

A) activation. 
B) transformation. 
C) replication. 
D) transcription. 
E) translation. 
A) activation. 
B) transformation. 
C) replication. 
D) transcription. 
E) translation.

Question 2

A transcription start signal is called a(n):

Accepted Answer

A) initiation codon. 
B) promoter. 
C) origin. 
D) start site. 
E) nonsense codon. 
A) initiation codon. 
B) promoter. 
C) origin. 
D) start site. 
E) nonsense codon.

Question 3

A random change in a DNA nucleotide base sequence:

Accepted Answer

A) cannot have an influence on genetic variation. 
B) is never expressed phenotypically. 
C) constitutes a mutation. 
D) is never beneficial to the organism. 
E) always kills the cell. 
A) cannot have an influence on genetic variation. 
B) is never expressed phenotypically. 
C) constitutes a mutation. 
D) is never beneficial to the organism. 
E) always kills the cell.

Question 4

A sequence of three RNA bases can function as a(n):

Accepted Answer

A) codon only. 
B) anticodon only. 
C) gene only. 
D) codon or anticodon. 
A) codon only. 
B) anticodon only. 
C) gene only. 
D) codon or anticodon.

Question 5

Which of the following is NOT a means of regulating gene expression?

Accepted Answer

A) regulating the life span of a protein 
B) modifying proteins after they are synthesized 
C) varying the rate at which messenger RNAs are translated 
D) varying the rate at which messenger RNAs are transcribed 
E) deleting genes from cells in which they are not needed 
A) regulating the life span of a protein 
B) modifying proteins after they are synthesized 
C) varying the rate at which messenger RNAs are translated 
D) varying the rate at which messenger RNAs are transcribed 
E) deleting genes from cells in which they are not needed

Question 6

What molecule directly allows translation of the four-letter "nucleic acid language" (A, T, G, and C nucleotides)into the 20 "amino acid language" of proteins?

Accepted Answer

A) transfer RNA 
B) ribosomal RNA 
C) messenger RNA 
D) DNA 
A) transfer RNA 
B) ribosomal RNA 
C) messenger RNA 
D) DNA

Question 7

Each gene is specific for a particular type of protein. True or False?

Accepted Answer

A) True 
 B)False

Question 8

Your tongue does not grow hair because:

Accepted Answer

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

Question 9

A mutation in which only one nucleotide in the DNA sequence is changed is referred to as a ________ mutation.

Accepted Answer

The answer of A mutation in which only one nucleotide...

Question 10

The process of converting the "message" of mRNA into a sequence of amino acids is called:

Accepted Answer

A) translation. 
B) transcription. 
C) activation. 
D) replication. 
E) repression. 
A) translation. 
B) transcription. 
C) activation. 
D) replication. 
E) repression.

Exam 12: Gene Expression and Regulation

The manufacture of proteins from RNA and amino acids is referred to as:

A transcription start signal is called a(n):

A random change in a DNA nucleotide base sequence:

A sequence of three RNA bases can function as a(n):

Which of the following is NOT a means of regulating gene expression?

What molecule directly allows translation of the four-letter "nucleic acid language" (A, T, G, and C nucleotides)into the 20 "amino acid language" of proteins?

Each gene is specific for a particular type of protein. True or False?

Your tongue does not grow hair because:

A mutation in which only one nucleotide in the DNA sequence is changed is referred to as a ________ mutation.

The process of converting the "message" of mRNA into a sequence of amino acids is called:

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

The Continuity of Life: Cellular 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 Amidst 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

How Do Ecosystems Work

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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