Question 1

Define the term biotechnology.

Accepted Answer

Biotechnology is any genetic a

Question 2

In gel electrophoresis, DNA is separated based on charge and _________.

Accepted Answer

The answer of In gel electrophoresis, DNA is separated based...

Question 3

Which of the following is a valid scientific concern about the environment and transgenic crops?

Accepted Answer

A)  Wild animals might eat the transgenic crops and become genetically mutated. 
B)  The toxic products of the modified genes would be released to the environment when the plants die, resulting in drastic die-offs of local wildlife. 
C)  Eating transgenic foods will permanently change human DNA. 
D)  Pollen from transgenic crops could carry the recombinant genes to wild relatives, with unpredictable consequences. 
A)  Wild animals might eat the transgenic crops and become genetically mutated. 
B)  The toxic products of the modified genes would be released to the environment when the plants die, resulting in drastic die-offs of local wildlife. 
C)  Eating transgenic foods will permanently change human DNA. 
D)  Pollen from transgenic crops could carry the recombinant genes to wild relatives, with unpredictable consequences.

Question 4

Restriction enzymes are useful in recombinant DNA studies because they

Accepted Answer

A)  cut DNA only at specific locations. 
B)  can reproduce in bacteria. 
C)  can separate pieces of DNA and RNA from each other. 
D)  give plasmids antibiotic properties. 
E)  join the cut ends of small DNA molecules. 
A)  cut DNA only at specific locations. 
B)  can reproduce in bacteria. 
C)  can separate pieces of DNA and RNA from each other. 
D)  give plasmids antibiotic properties. 
E)  join the cut ends of small DNA molecules.

Question 5

In the 1990s, researchers attempted to improve the balance of amino acids in soybean protein by inserting a gene from Brazil nuts. Which of the following is the best reason as to why the transgenic soybeans have never been grown commercially?

Accepted Answer

A)  Regulatory hurdles made the modified soybeans too expensive to market profitably. 
B)  Some people were allergic to the protein product of the Brazil nut gene. 
C)  The modified soybeans could not grow with the foreign gene present. 
D)  The public was misinformed by food-safety advocates and refused to buy products made from the modified soybeans. 
A)  Regulatory hurdles made the modified soybeans too expensive to market profitably. 
B)  Some people were allergic to the protein product of the Brazil nut gene. 
C)  The modified soybeans could not grow with the foreign gene present. 
D)  The public was misinformed by food-safety advocates and refused to buy products made from the modified soybeans.

Question 6

DNA moves within an electric field because it

Accepted Answer

A)  is positively charged. 
B)  is negatively charged. 
C)  can possess different charges (positive or negative), depending on its base sequence. 
D)  makes up chromosomes, which are slightly electromagnetic. 
A)  is positively charged. 
B)  is negatively charged. 
C)  can possess different charges (positive or negative), depending on its base sequence. 
D)  makes up chromosomes, which are slightly electromagnetic.

Question 7

How many copies of a particular gene of interest are produced from a single template DNA strand after three cycles of PCR?

Accepted Answer

A)  Eight 
B)  Three 
C)  Four 
D)  Two 
E)  Five 
A)  Eight 
B)  Three 
C)  Four 
D)  Two 
E)  Five

Question 8

Which of the following is currently used by the U.S. Department of Justice as a form of genetic ʺfingerprintsʺ of criminals?

Accepted Answer

A)  The genes responsible for producing the unique patterns of swirls and loops on a personʹs fingers 
B)  PCRs 
C)  Plasmids 
D)  STRs 
E)  The number of introns in a chromosome 
A)  The genes responsible for producing the unique patterns of swirls and loops on a personʹs fingers 
B)  PCRs 
C)  Plasmids 
D)  STRs 
E)  The number of introns in a chromosome

Question 9

Which of the following is the correct sequence of PCR?

Accepted Answer

A)  Heat to 70°C (to separate DN
A) , then cool to 50°C (to bind primers and enzymes), and then reheat to 90°C (to synthesize DN
A) . 
B)  Heat to 90°C (to separate DN
A) , then cool to 50°C (to bind primers and enzymes), and then reheat to 70°C (to synthesize DN
A) . 
C)  Heat to 70°C (to bind primers and enzymes), then cool to 50°C (to synthesize DN
A) , and then reheat to 90°C (to separate DN
A) . 
D)  Heat to 90°C (to bind primers and enzymes), then cool to 50°C (to separate DN
A) , and then reheat to 70°C (to synthesize DN
A) . 
A)  Heat to 70°C (to separate DN
A) , then cool to 50°C (to bind primers and enzymes), and then reheat to 90°C (to synthesize DN
A) . 
B)  Heat to 90°C (to separate DN
A) , then cool to 50°C (to bind primers and enzymes), and then reheat to 70°C (to synthesize DN
A) . 
C)  Heat to 70°C (to bind primers and enzymes), then cool to 50°C (to synthesize DN
A) , and then reheat to 90°C (to separate DN
A) . 
D)  Heat to 90°C (to bind primers and enzymes), then cool to 50°C (to separate DN
A) , and then reheat to 70°C (to synthesize DN
A) .

Question 10

In nature, DNA recombination occurs but it is random and undirected.

Accepted Answer

A) True 
 B)False

Question 11

To join a fragment of human DNA to bacterial or yeast DNA, both the human DNA and the bacterial or yeast DNA must first be treated with the same

Accepted Answer

A)  DNA ligase. 
B)  DNA gyrase. 
C)  restriction enzyme. 
D)  DNA polymerase. 
A)  DNA ligase. 
B)  DNA gyrase. 
C)  restriction enzyme. 
D)  DNA polymerase.

Exam 14: Biotechnology

Define the term biotechnology.

In gel electrophoresis, DNA is separated based on charge and _________.

Which of the following is a valid scientific concern about the environment and transgenic crops?

Restriction enzymes are useful in recombinant DNA studies because they

In the 1990s, researchers attempted to improve the balance of amino acids in soybean protein by inserting a gene from Brazil nuts. Which of the following is the best reason as to why the transgenic soybeans have never been grown commercially?

DNA moves within an electric field because it

How many copies of a particular gene of interest are produced from a single template DNA strand after three cycles of PCR?

Which of the following is currently used by the U.S. Department of Justice as a form of genetic ʺfingerprintsʺ of criminals?

Which of the following is the correct sequence of PCR?

In nature, DNA recombination occurs but it is random and undirected.

To join a fragment of human DNA to bacterial or yeast DNA, both the human DNA and the bacterial or yeast DNA must first be treated with the same

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

Gene Expression and Regulation

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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