Question 1

Charles Darwin introduced the concept of adaptation,which he defined as features that

Accepted Answer

A)  help organisms survive and reproduce. 
B)  enable organisms to resist the pressures of evolutionary change. 
C)  enable organisms to change their environment in ways that best ensure continued survival. 
D)  enable organisms to alter their DNA in a selective fashion. 
A)  help organisms survive and reproduce. 
B)  enable organisms to resist the pressures of evolutionary change. 
C)  enable organisms to change their environment in ways that best ensure continued survival. 
D)  enable organisms to alter their DNA in a selective fashion.

Question 2

New medications undergo extensive human testing before receiving FDA approval.These tests represent an experiment,and the variations in the dosage given to test participants represents the ________.

Accepted Answer

independen

Question 3

The scientific method begins with ________.

Accepted Answer

The answer of The scientific method begins with ________....

Question 4

A scientific hypothesis must be testable; if it isn't,science cannot evaluate it.

Accepted Answer

A) True 
 B)False

Question 5

Scientists can propose testable predictions after first developing a(n)________.

Accepted Answer

The answer of Scientists can propose testable predictions after first...

Question 6

Multicellular organisms are constructed from many types of specialized cells.Why might having specialized cells be more advantageous than being a single-celled organism?

Accepted Answer

A)  Specialized cells can do a given job better than general-purpose cells can. 
B)  Specialized cells can survive independently of the organism. 
C)  Nonspecialized cells do not live as long as specialized cells. 
D)  Nonspecialized cells are unable to stick together to make up a multicellular organism. 
A)  Specialized cells can do a given job better than general-purpose cells can. 
B)  Specialized cells can survive independently of the organism. 
C)  Nonspecialized cells do not live as long as specialized cells. 
D)  Nonspecialized cells are unable to stick together to make up a multicellular organism.

Question 7

Which of the following observations strengthens the hypothesis that a common ancestor gave rise to all living organisms?

Accepted Answer

A)  Almost all cells in all living organisms use DNA to direct their structure, function, and behavior. 
B)  All living organisms use energy acquired directly from the environment or from other organisms. 
C)  All living organisms sense their environment and respond to it. 
D)  Each type of living organism adheres to the general principles of the biological hierarchy. 
A)  Almost all cells in all living organisms use DNA to direct their structure, function, and behavior. 
B)  All living organisms use energy acquired directly from the environment or from other organisms. 
C)  All living organisms sense their environment and respond to it. 
D)  Each type of living organism adheres to the general principles of the biological hierarchy.

Question 8

One of the largest long-term clinical trials in the United States,which encompassed about 14,000 male physicians ages 50 and older,found that the incidence of cancer could be decreased by 8 percent by taking a common combination of essential ________ and ________ daily,compared with taking a placebo.

Accepted Answer

The answer of One of the largest long-term clinical trials...

Question 9

Which of the following statements about how organisms obtain energy is true?

Accepted Answer

A)  Producers obtain their energy from other organisms. 
B)  Producers represent the final energy transfer in the sequence of energy transfers between the environment and living organisms. 
C)  Consumers obtain their energy from other organisms. 
D)  Consumers represent the initial energy transfer in the sequence of energy transfers between the environment and living organisms. 
A)  Producers obtain their energy from other organisms. 
B)  Producers represent the final energy transfer in the sequence of energy transfers between the environment and living organisms. 
C)  Consumers obtain their energy from other organisms. 
D)  Consumers represent the initial energy transfer in the sequence of energy transfers between the environment and living organisms.

Question 10

When you call a telephone number,you are

Accepted Answer

A)  making an observation. 
B)  testing a hypothesis by conducting an experiment. 
C)  constructing a theory, which can then be tested. 
D)  testing a theory. 
A)  making an observation. 
B)  testing a hypothesis by conducting an experiment. 
C)  constructing a theory, which can then be tested. 
D)  testing a theory.

Question 11

A group of interbreeding organisms whose offspring are themselves fertile is defined as a

Accepted Answer

A)  web. 
B)  biome. 
C)  unit. 
D)  species. 
A)  web. 
B)  biome. 
C)  unit. 
D)  species.

Question 12

Groups of different species that live and interact in a given area are referred to as a

Accepted Answer

A)  biosphere. 
B)  population. 
C)  community. 
D)  habitat. 
A)  biosphere. 
B)  population. 
C)  community. 
D)  habitat.

Question 13

Viruses cannot reproduce on their own; they do so by taking over the machinery that exists in the cells of the organisms they invade,whether those organisms are bacteria,plants,or animals.Vaccinations can provide lifelong protection against some diseases,but flu vaccines are rarely effective against the next year's flu virus.Which of the following statements is most likely to explain this fact?

Accepted Answer

A)  Viruses are not alive. 
B)  Viruses can evolve quickly. 
C)  A virus can change its cell membranes to block the action of the vaccine. 
D)  Viruses can develop into immune bacteria that neutralize the action of the vaccine. 
A)  Viruses are not alive. 
B)  Viruses can evolve quickly. 
C)  A virus can change its cell membranes to block the action of the vaccine. 
D)  Viruses can develop into immune bacteria that neutralize the action of the vaccine.

Question 14

Modern life often masks the struggles that have characterized human life through much of its history.In the past,human survival was critically dependent on our ability to

Accepted Answer

A)  run faster than most human predators. 
B)  solve complex problems. 
C)  hear sounds at much lower intensities than other animals. 
D)  sense a wider range of smells than other animals. 
A)  run faster than most human predators. 
B)  solve complex problems. 
C)  hear sounds at much lower intensities than other animals. 
D)  sense a wider range of smells than other animals.

Question 15

Microbiologists quickly responded to the paper by Dr.Wolfe-Simon in which she claimed to have discovered bacteria that were using arsenic to construct their DNA.One of the most challenging criticisms was that she and her colleagues

Accepted Answer

A)  were unable to account for arsenic's toxicity to other organisms. 
B)  published the paper before going through the conventional peer review process. 
C)  had an inadequate protocol for eliminating all phosphorus from the test tubes that contained the bacteria. 
D)  lacked comparative information about closely related bacteria within the Halomonadaceae family. 
A)  were unable to account for arsenic's toxicity to other organisms. 
B)  published the paper before going through the conventional peer review process. 
C)  had an inadequate protocol for eliminating all phosphorus from the test tubes that contained the bacteria. 
D)  lacked comparative information about closely related bacteria within the Halomonadaceae family.

Question 16

When experimental data verify a prediction,the hypothesis is considered proven.

Accepted Answer

A) True 
 B)False

Question 17

To survive,living organisms must be able to sense and respond to both their internal and external ________.

Accepted Answer

The answer of To survive,living organisms must be able to...

Question 18

The basic unit of life is the

Accepted Answer

A)  cell. 
B)  organ. 
C)  organelle. 
D)  tissue. 
A)  cell. 
B)  organ. 
C)  organelle. 
D)  tissue.

Question 19

A scientist named Dr.Burkholder hypothesized that the dinoflagellate Pfiesteria was associated with the massive die-offs of fish in North Carolina rivers.Subsequent observations supported her hypothesis.Which of the following observations would support that hypothesis?

Accepted Answer

A)  Pfiesteria was shown to be capable of living within the climatic ranges of North Carolina. 
B)  A predicted increase in Pfiesteria populations coincided with a fish die-off. 
C)  New observations revealed that Pfiesteria could kill laboratory fish. 
D)  A virulent toxin was isolated from Pfiesteria cultures grown in the laboratory. 
A)  Pfiesteria was shown to be capable of living within the climatic ranges of North Carolina. 
B)  A predicted increase in Pfiesteria populations coincided with a fish die-off. 
C)  New observations revealed that Pfiesteria could kill laboratory fish. 
D)  A virulent toxin was isolated from Pfiesteria cultures grown in the laboratory.

Question 20

DNA is an example of the molecular level of biological organization.

Accepted Answer

A) True 
 B)False

Exam 1: The Nature of Science and the Characteristics of Life

Charles Darwin introduced the concept of adaptation,which he defined as features that

New medications undergo extensive human testing before receiving FDA approval.These tests represent an experiment,and the variations in the dosage given to test participants represents the ________.

The scientific method begins with ________.

A scientific hypothesis must be testable; if it isn't,science cannot evaluate it.

Scientists can propose testable predictions after first developing a(n)________.

Multicellular organisms are constructed from many types of specialized cells.Why might having specialized cells be more advantageous than being a single-celled organism?

Which of the following observations strengthens the hypothesis that a common ancestor gave rise to all living organisms?

Which of the following statements about how organisms obtain energy is true?

When you call a telephone number,you are

A group of interbreeding organisms whose offspring are themselves fertile is defined as a

Groups of different species that live and interact in a given area are referred to as a

Modern life often masks the struggles that have characterized human life through much of its history.In the past,human survival was critically dependent on our ability to

Microbiologists quickly responded to the paper by Dr.Wolfe-Simon in which she claimed to have discovered bacteria that were using arsenic to construct their DNA.One of the most challenging criticisms was that she and her colleagues

When experimental data verify a prediction,the hypothesis is considered proven.

To survive,living organisms must be able to sense and respond to both their internal and external ________.

The basic unit of life is the

A scientist named Dr.Burkholder hypothesized that the dinoflagellate Pfiesteria was associated with the massive die-offs of fish in North Carolina rivers.Subsequent observations supported her hypothesis.Which of the following observations would support that hypothesis?

DNA is an example of the molecular level of biological organization.

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photo Synthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

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