Question 1

Scientists who study evolution and classification of life's diverse organisms are called _______.

Accepted Answer

The answer of Scientists who study evolution and classification of...

Question 2

The branching patterns of the evolutionary tree of life are based on a rich array of evidence from

Accepted Answer

A)  fossils. 
B)  molecular evidence. 
C)  metabolic processes. 
D)  All of the above 
E)  None of the above 
A)  fossils. 
B)  molecular evidence. 
C)  metabolic processes. 
D)  All of the above 
E)  None of the above

Question 3

Overfishing of the western bluefin tuna in the Gulf of Mexico breeding ground resulted in a serious decline in the population. Fishing quotas were established in the Gulf of Mexico to allow the endangered population to recover. Why did this policy fail to achieve the desired result?

Accepted Answer

A)  The feeding grounds of the western bluefin are geographically separated from the feeding grounds of the eastern bluefin. 
B)  The breeding grounds of the western bluefin are geographically separated from the breeding grounds of the eastern bluefin. 
C)  Fisherman disregarded the policy. 
D)  Western and eastern populations of bluefin feed throughout the entire North Atlantic. 
E)  The policy was designed without advice and guidance from scientists. 
A)  The feeding grounds of the western bluefin are geographically separated from the feeding grounds of the eastern bluefin. 
B)  The breeding grounds of the western bluefin are geographically separated from the breeding grounds of the eastern bluefin. 
C)  Fisherman disregarded the policy. 
D)  Western and eastern populations of bluefin feed throughout the entire North Atlantic. 
E)  The policy was designed without advice and guidance from scientists.

Question 4

Based on the large numbers of offspring produced by many organisms, Darwin proposed that mortality was high and only a few individuals survived to reproduce. He referred to the differential reproductive success of individuals with particular variations as

Accepted Answer

A)  evolution. 
B)  artificial selection. 
C)  the cell theory. 
D)  natural selection. 
E)  inheritance of acquired characteristics. 
A)  evolution. 
B)  artificial selection. 
C)  the cell theory. 
D)  natural selection. 
E)  inheritance of acquired characteristics.

Question 5

An organism

Accepted Answer

A)  must contain more than one cell. 
B)  can evolve. 
C)  cannot do biological work. 
D)  can be generated from nonliving materials. 
E)  is dependent on another organism for reproduction. 
A)  must contain more than one cell. 
B)  can evolve. 
C)  cannot do biological work. 
D)  can be generated from nonliving materials. 
E)  is dependent on another organism for reproduction.

Question 6

Which of the following does not contribute to adaptation in the wild?

Accepted Answer

A)  Artificial selection 
B)  Genetic drift 
C)  Natural selection 
D)  Sexual selection 
E)  All of the above contribute to adaptation in the wild. 
A)  Artificial selection 
B)  Genetic drift 
C)  Natural selection 
D)  Sexual selection 
E)  All of the above contribute to adaptation in the wild.

Question 7

Scientists estimate that for more than _______ years after cells originated, all organisms consisted of one cell.

Accepted Answer

A)  2,500 
B)  250,000 
C)  2.5 million 
D)  2.5 billion 
E)  2.5 trillion 
A)  2,500 
B)  250,000 
C)  2.5 million 
D)  2.5 billion 
E)  2.5 trillion

Question 8

Plants show remarkable adaptations to their environments, even though they were derived from a common ancestor. Such diversity of plants arose by

Accepted Answer

A)  reproduction. 
B)  evolution and natural selection. 
C)  inheritance of acquired traits. 
D)  genetic variability only. 
E)  changes in rates of photosynthesis. 
A)  reproduction. 
B)  evolution and natural selection. 
C)  inheritance of acquired traits. 
D)  genetic variability only. 
E)  changes in rates of photosynthesis.

Question 9

Viruses

Accepted Answer

A)  can mutate. 
B)  can extract energy from their environment. 
C)  can synthesize DNA or RNA on their own. 
D)  can reproduce on their own. 
E)  are cellular. 
A)  can mutate. 
B)  can extract energy from their environment. 
C)  can synthesize DNA or RNA on their own. 
D)  can reproduce on their own. 
E)  are cellular.

Question 10

The organisms that produced the oxygen gas in Earth's atmosphere in ancient times were

Accepted Answer

A)  heterotrophic eukaryotes. 
B)  autotrophic eukaryotes. 
C)  autotrophic prokaryotes. 
D)  heterotrophic prokaryotes. 
E)  completely unlike modern organisms. 
A)  heterotrophic eukaryotes. 
B)  autotrophic eukaryotes. 
C)  autotrophic prokaryotes. 
D)  heterotrophic prokaryotes. 
E)  completely unlike modern organisms.

Question 11

The chemical formula for ozone is

Accepted Answer

A)  O. 
B)  O2. 
C)  H2O2. 
D)  O3. 
E)  None of the above 
A)  O. 
B)  O2. 
C)  H2O2. 
D)  O3. 
E)  None of the above

Question 12

Which of the following statements represents a scientific point of view?

Accepted Answer

A)  Earth was created by a supernatural force. 
B)  The positions of the sun, moon, and stars provide guidance for making decisions. 
C)  Inner strength comes from the beauty in nature. 
D)  Testing the effect of antibiotics on E. coli can help prevent deaths from food poisoning. 
E)  Meditation helps to solve problems. 
A)  Earth was created by a supernatural force. 
B)  The positions of the sun, moon, and stars provide guidance for making decisions. 
C)  Inner strength comes from the beauty in nature. 
D)  Testing the effect of antibiotics on E. coli can help prevent deaths from food poisoning. 
E)  Meditation helps to solve problems.

Question 13

Which of the following is not a feature of scientific hypotheses?

Accepted Answer

A)  They are unable to be falsified. 
B)  They make predictions. 
C)  They are based on observations. 
D)  They can be tested by experimentation. 
E)  They can be tested by observational analysis. 
A)  They are unable to be falsified. 
B)  They make predictions. 
C)  They are based on observations. 
D)  They can be tested by experimentation. 
E)  They can be tested by observational analysis.

Question 14

Which of the following is not a characteristic of most living organisms?

Accepted Answer

A)  Regulation of internal environment 
B)  One or more cells 
C)  Ability to produce biological molecules 
D)  Ability to extract energy from the environment 
E)  None of the above 
A)  Regulation of internal environment 
B)  One or more cells 
C)  Ability to produce biological molecules 
D)  Ability to extract energy from the environment 
E)  None of the above

Question 15

A prerequisite for the survival of life on land was the accumulation of

Accepted Answer

A)  O2 in the atmosphere. 
B)  CO2 in the atmosphere. 
C)  water vapor in the atmosphere. 
D)  O3 in the atmosphere. 
E)  bacteria in the soil. 
A)  O2 in the atmosphere. 
B)  CO2 in the atmosphere. 
C)  water vapor in the atmosphere. 
D)  O3 in the atmosphere. 
E)  bacteria in the soil.

Question 16

Single-celled organisms that lack discrete intracellular compartments belong to the two kingdoms: _______ and _______.

Accepted Answer

The answer of Single-celled organisms that lack discrete intracellular compartments...

Question 17

A gene controlling human skin color was discovered in experiments with

Accepted Answer

A)  fruit flies. 
B)  zebrafish. 
C)  roundworms. 
D)  mustard plants. 
E)  sea urchins. 
A)  fruit flies. 
B)  zebrafish. 
C)  roundworms. 
D)  mustard plants. 
E)  sea urchins.

Exam 1: Studying Life

Scientists who study evolution and classification of life's diverse organisms are called _______.

The branching patterns of the evolutionary tree of life are based on a rich array of evidence from

Overfishing of the western bluefin tuna in the Gulf of Mexico breeding ground resulted in a serious decline in the population. Fishing quotas were established in the Gulf of Mexico to allow the endangered population to recover. Why did this policy fail to achieve the desired result?

Based on the large numbers of offspring produced by many organisms, Darwin proposed that mortality was high and only a few individuals survived to reproduce. He referred to the differential reproductive success of individuals with particular variations as

An organism

Which of the following does not contribute to adaptation in the wild?

Scientists estimate that for more than _______ years after cells originated, all organisms consisted of one cell.

Plants show remarkable adaptations to their environments, even though they were derived from a common ancestor. Such diversity of plants arose by

Viruses

The organisms that produced the oxygen gas in Earth's atmosphere in ancient times were

The chemical formula for ozone is

Which of the following statements represents a scientific point of view?

Which of the following is not a feature of scientific hypotheses?

Which of the following is not a characteristic of most living organisms?

A prerequisite for the survival of life on land was the accumulation of

Single-celled organisms that lack discrete intracellular compartments belong to the two kingdoms: _______ and _______.

A gene controlling human skin color was discovered in experiments with

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 Signaling and Communication

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

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

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 and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

Single-celled organisms that lack discrete intracellular compartments belong to the two kingdoms: _ and _.