Question 1

Which is not an attribute of homeostasis in a multicellular organism?

Accepted Answer

A)  Maintaining a stable internal environment 
B)  Maintaining the extracellular fluid within a range of physical conditions 
C)  Maintaining a stable external environment 
D)  Physiological systems that can change in response to regulatory signals 
E)  Physiological systems that work cooperatively 
A)  Maintaining a stable internal environment 
B)  Maintaining the extracellular fluid within a range of physical conditions 
C)  Maintaining a stable external environment 
D)  Physiological systems that can change in response to regulatory signals 
E)  Physiological systems that work cooperatively C

Question 2

Photosynthesis was a major evolutionary milestone because

Accepted Answer

A)  photosynthetic organisms contributed oxygen to the environment, which led to the evolution of aerobic organisms. 
B)  photosynthesis led to conditions that allowed unicellular organisms to thrive in marine environments. 
C)  photosynthesis is the only metabolic process that can convert the chemical energy stored in chemical bonds into biological work. 
D)  photosynthesis reduces the harmful effects of ultraviolet light. 
E)  photosynthetic organisms provided a way for the elements carbon, oxygen, and hydrogen to be recycled from the biosphere back into the physical environment. 
A)  photosynthetic organisms contributed oxygen to the environment, which led to the evolution of aerobic organisms. 
B)  photosynthesis led to conditions that allowed unicellular organisms to thrive in marine environments. 
C)  photosynthesis is the only metabolic process that can convert the chemical energy stored in chemical bonds into biological work. 
D)  photosynthesis reduces the harmful effects of ultraviolet light. 
E)  photosynthetic organisms provided a way for the elements carbon, oxygen, and hydrogen to be recycled from the biosphere back into the physical environment. A

Question 3

Which problem is directly related to global climate change?

Accepted Answer

A)  Development of antibiotic-resistant bacteria 
B)  Overfishing of bluefin tuna 
C)  Engineering of drought-resistant crops 
D)  Consumption of fossil fuels 
E)  Genetic diseases 
A)  Development of antibiotic-resistant bacteria 
B)  Overfishing of bluefin tuna 
C)  Engineering of drought-resistant crops 
D)  Consumption of fossil fuels 
E)  Genetic diseases D

Question 4

Much of what we know about the genes that control plant development was discovered in experiments with

Accepted Answer

A)  fruit flies. 
B)  zebrafish. 
C)  roundworms. 
D)  Arabidopsis thaliana. 
E)  Chlorella. 
A)  fruit flies. 
B)  zebrafish. 
C)  roundworms. 
D)  Arabidopsis thaliana. 
E)  Chlorella.

Question 5

Earth is approximately _______ years old.

Accepted Answer

A)  5.5 million 
B)  40-50 million 
C)  4.5 billion 
D)  5 trillion 
E)  40 trillion 
A)  5.5 million 
B)  40-50 million 
C)  4.5 billion 
D)  5 trillion 
E)  40 trillion

Question 6

Some folk medicines have been found to have a scientific basis.For example, the practice of chewing on willow bark to relieve pain was shown to have merit when it was discovered that willow bark contained the compound salicylic acid.A modified form of this compound, acetylsalicylic acid, is now used as the active ingredient in aspirin.If willow bark were put to the test, experiment after experiment would show that this folk medicine was effective at relieving pain.This is an example of the concept that to be scientific, observations that support a hypothesis must be _______.

Accepted Answer

The answer of Some folk medicines have been found to...

Question 7

The main purpose of any single experiment is to

Accepted Answer

A)  obtain accurate quantitative measurements. 
B)  prove unambiguously that a particular hypothesis is correct. 
C)  avoid a merely comparative analysis. 
D)  answer as many key questions as possible. 
E)  test a prediction that is based on a hypothesis. 
A)  obtain accurate quantitative measurements. 
B)  prove unambiguously that a particular hypothesis is correct. 
C)  avoid a merely comparative analysis. 
D)  answer as many key questions as possible. 
E)  test a prediction that is based on a hypothesis.

Question 8

Which of the following statements about mutations is incorrect?

Accepted Answer

A)  All mutations are harmful. 
B)  Mutations occur spontaneously. 
C)  Mutations can be induced by outside environmental factors. 
D)  Mutations occur each time the genome is replicated. 
E)  A mutation can improve the functioning of an organism. 
A)  All mutations are harmful. 
B)  Mutations occur spontaneously. 
C)  Mutations can be induced by outside environmental factors. 
D)  Mutations occur each time the genome is replicated. 
E)  A mutation can improve the functioning of an organism.

Question 9

Genetic information

Accepted Answer

A)  is identical for all living cells. 
B)  continues unchanging from one generation to the next. 
C)  originates in the proteins in a cell. 
D)  can be passed on to offspring. 
E)  is only found in animal and plant cells. 
A)  is identical for all living cells. 
B)  continues unchanging from one generation to the next. 
C)  originates in the proteins in a cell. 
D)  can be passed on to offspring. 
E)  is only found in animal and plant cells.

Question 10

Which does not contribute to adaptation in the wild?

Accepted Answer

A)  Artificial selection 
B)  Genetic drift 
C)  Natural selection 
D)  Sexual selection 
E)  Environmental conditions 
A)  Artificial selection 
B)  Genetic drift 
C)  Natural selection 
D)  Sexual selection 
E)  Environmental conditions

Question 11

Refer to the table below.   The table shows a list of symptoms observed in an older domestic cat.The veterinarian observing these symptoms suspects a problem involving the thyroid gland.This gland produces and secretes thyroid hormone.Thyroid hormone is involved in controlling cell metabolism and its use of energy.It also is involved in controlling heart rate, breathing rate, and other organ functions.Should this be a concern to the cat's owner?

Accepted Answer

A)  Yes, because the cat's internal body systems are not in balance and will continue to be out of balance until thyroid hormone levels are restored to the normal range. 
B)  Yes, because the cat could infect the owner with the disorder during cleanup of waste resulting from the cat's diarrhea. 
C)  No, because the symptoms are not debilitating and the cat is not likely to die from the disorder. 
D)  No, because this is likely to be a temporary problem that the cat will eventually recover from on its own. 
E)  There is not enough information to make a judgment. 
A)  Yes, because the cat's internal body systems are not in balance and will continue to be out of balance until thyroid hormone levels are restored to the normal range. 
B)  Yes, because the cat could infect the owner with the disorder during cleanup of waste resulting from the cat's diarrhea. 
C)  No, because the symptoms are not debilitating and the cat is not likely to die from the disorder. 
D)  No, because this is likely to be a temporary problem that the cat will eventually recover from on its own. 
E)  There is not enough information to make a judgment.

Question 12

Refer to the following table.   The table summarizes data collected by a student during an investigation to determine the effects of blue light on plant growth.Group 1 represents the _______ group in this investigation.

Accepted Answer

The answer of Refer to the following table.  ...

Question 13

A statistical test starts with

Accepted Answer

A)  a null hypothesis. 
B)  deductive logic. 
C)  inductive logic. 
D)  a hypothesis. 
E)  a model system. 
A)  a null hypothesis. 
B)  deductive logic. 
C)  inductive logic. 
D)  a hypothesis. 
E)  a model system.

Question 14

Refer to the diagram below showing the evolutionary tree of life.   Which statement is supported by this diagram?

Accepted Answer

A)  Plants contain chloroplasts but not mitochondria. 
B)  No members of Eukarya contain both mitochondria and chloroplasts. 
C)  Chloroplasts are found in bacteria. 
D)  Mitochondria evolved before chloroplasts. 
E)  Mitochondria are found in bacteria. 
A)  Plants contain chloroplasts but not mitochondria. 
B)  No members of Eukarya contain both mitochondria and chloroplasts. 
C)  Chloroplasts are found in bacteria. 
D)  Mitochondria evolved before chloroplasts. 
E)  Mitochondria are found in bacteria.

Question 15

Ozone is important to life on Earth because it

Accepted Answer

A)  is toxic to all forms of life. 
B)  can be used in place of oxygen. 
C)  blocks much ultraviolet radiation. 
D)  provides energy to some basic forms of life. 
E)  acts as a disinfectant. 
A)  is toxic to all forms of life. 
B)  can be used in place of oxygen. 
C)  blocks much ultraviolet radiation. 
D)  provides energy to some basic forms of life. 
E)  acts as a disinfectant.

Question 16

Which human activities do not rely on biodiversity?

Accepted Answer

A)  Bird-watching 
B)  Gardening 
C)  Farming 
D)  Hunting 
E)  Fishing 
A)  Bird-watching 
B)  Gardening 
C)  Farming 
D)  Hunting 
E)  Fishing

Question 17

Refer to the table below.   The table summarizes data collected during an investigation to determine the effects of lack of sleep on human problem-solving ability.Group 2 represents the _______ group in this investigation.

Accepted Answer

The answer of Refer to the table below.  ...

Question 18

Which statement is true?

Accepted Answer

A)  Biologists have discovered almost all of the species that inhabit Earth. 
B)  Biologists have discovered about three-quarters of the species that inhabit Earth. 
C)  Biologists have discovered about half of the species that inhabit Earth. 
D)  Biologists have discovered only a small percentage of the species that inhabit Earth. 
E)  Biologists have discovered a small percentage of the species that inhabit Mars. 
A)  Biologists have discovered almost all of the species that inhabit Earth. 
B)  Biologists have discovered about three-quarters of the species that inhabit Earth. 
C)  Biologists have discovered about half of the species that inhabit Earth. 
D)  Biologists have discovered only a small percentage of the species that inhabit Earth. 
E)  Biologists have discovered a small percentage of the species that inhabit Mars.

Question 19

Which is evidence that an organ system provides a level of function not possible with individual organs operating independently?

Accepted Answer

A)  Bears grow thick fur on their bodies. 
B)  Blood circulates to all tissues of a horse's body. 
C)  Humans produce antibodies that bind to invading pathogens. 
D)  Bones in mammals are composed of living cells. 
E)  The dog stomach produces digestive enzymes. 
A)  Bears grow thick fur on their bodies. 
B)  Blood circulates to all tissues of a horse's body. 
C)  Humans produce antibodies that bind to invading pathogens. 
D)  Bones in mammals are composed of living cells. 
E)  The dog stomach produces digestive enzymes.

Question 20

Changes in the global climate, leading to the extinctions of large numbers of species and the spread of new and old diseases, are caused largely by the activities of _______.

Accepted Answer

The answer of Changes in the global climate, leading to...

Exam 1: Studying Life

Which is not an attribute of homeostasis in a multicellular organism?

Photosynthesis was a major evolutionary milestone because

Which problem is directly related to global climate change?

Much of what we know about the genes that control plant development was discovered in experiments with

Earth is approximately _______ years old.

The main purpose of any single experiment is to

Which of the following statements about mutations is incorrect?

Genetic information

Which does not contribute to adaptation in the wild?

Refer to the following table. The table summarizes data collected by a student during an investigation to determine the effects of blue light on plant growth.Group 1 represents the _______ group in this investigation.

A statistical test starts with

Refer to the diagram below showing the evolutionary tree of life. Which statement is supported by this diagram?

Ozone is important to life on Earth because it

Which human activities do not rely on biodiversity?

Refer to the table below. The table summarizes data collected during an investigation to determine the effects of lack of sleep on human problem-solving ability.Group 2 represents the _______ group in this investigation.

Which statement is true?

Which is evidence that an organ system provides a level of function not possible with individual organs operating independently?

Changes in the global climate, leading to the extinctions of large numbers of species and the spread of new and old diseases, are caused largely by the activities of _______.

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Communication and Multicellularity

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinant Dna and Biotechnology

Mechanisms of Evolution

Reconstructing and Using Phylogenies

Speciation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

The Evolution and Diversity of Fungi

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons, Glia, and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Functions

Musculoskeletal Systems

Gas Exchange

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen Excretion

Animal Behavior

The Physical Environment and Biogeography of Life

Populations

Species Interactions

Communities

Ecosystems

A Changing Biosphere

Filters