Question 1

Which of the following features are present at the ecosystem level?

Accepted Answer

A) chemical cycling through the food chain 
B) energy flow that begins at the producer level 
C) input of solar energy 
D) complex interactions between a variety of populations 
E) All are features of an ecosystem. 
A) chemical cycling through the food chain 
B) energy flow that begins at the producer level 
C) input of solar energy 
D) complex interactions between a variety of populations 
E) All are features of an ecosystem.

Question 2

You are interested in the effect of increased carbon dioxide versus normal air on the growth of corn plants as well as the effect of green light versus full sunlight on the growth of corn plants.Your plan is to set up your experiment inside a greenhouse where you can control the environment.Which of the following is an aspect of the experiment that should be considered and controlled?

Accepted Answer

A) An increase in carbon dioxide should not result in a substantial decrease of other necessary gases. 
B) All seedlings come from one uniform strain. 
C) The intensity or brightness of the green light equals the intensity of the full sunlight. 
D) All temperatures and available water remain the same for all plants. 
E) All of the choices are important considerations. 
A) An increase in carbon dioxide should not result in a substantial decrease of other necessary gases. 
B) All seedlings come from one uniform strain. 
C) The intensity or brightness of the green light equals the intensity of the full sunlight. 
D) All temperatures and available water remain the same for all plants. 
E) All of the choices are important considerations.

Question 3

Climate change is primarily due to an imbalance in the chemical cycling of the element carbon.

Accepted Answer

A) True 
 B)False

Question 4

Due to human activities,more carbon dioxide is being released into the atmosphere than is being removed.What happens to this extra carbon dioxide? Select all that apply.

Accepted Answer

A) Some of the carbon dioxide stays in the atmosphere which causes surface temperature to rise. 
B) Approximately half of the extraneous carbon dioxide is being expelled into deep space. 
C) Much of the extraneous carbon dioxide is dissolved into the oceans where it is causing acidification. 
D) Trees and other plants have increased their rates of photosynthesis and are effectively removing most of the extraneous carbon dioxide. 
A) Some of the carbon dioxide stays in the atmosphere which causes surface temperature to rise. 
B) Approximately half of the extraneous carbon dioxide is being expelled into deep space. 
C) Much of the extraneous carbon dioxide is dissolved into the oceans where it is causing acidification. 
D) Trees and other plants have increased their rates of photosynthesis and are effectively removing most of the extraneous carbon dioxide.

Question 5

To ensure a controlled experiment,all of the following conditions (variables)should be identical in Group 1 and Group 2:

Accepted Answer

A) type of bacteria,temperature,and incubation period 
B) temperature and amount of initial inoculum (bacteria used) 
C) type of bacteria,incubation period,amount of bacteria used 
D) degree of turbidity,incubation period,and amount of bacteria 
A) type of bacteria,temperature,and incubation period 
B) temperature and amount of initial inoculum (bacteria used) 
C) type of bacteria,incubation period,amount of bacteria used 
D) degree of turbidity,incubation period,and amount of bacteria

Question 6

In the scientific method,what precedes the formation of the hypothesis?

Accepted Answer

A) a prediction 
B) experimentation 
C) analysis of results 
D) observation 
A) a prediction 
B) experimentation 
C) analysis of results 
D) observation

Question 7

Tropical rain forests have many species that are found in great abundance.A study in the Brazilian rain forest found 487 tree species growing on a single hectare (2.5 acres).In the U.S.and Canada together,there are only 700 species of trees on millions of acres.In one park in a Peruvian rain forest,scientists have identified over 1,300 species of butterflies,while in all of Europe there are approximately 320 butterfly species.These findings suggest that

Accepted Answer

A) rain forests are biologically less diverse than other ecosystems on Earth. 
B) the number of tree species and butterfly species are about the same throughout the ecosystems of the world. 
C) rain forests are biologically more diverse than other ecosystems. 
D) as many as 400 species a day are lost due to human activity. 
E) rain forests do not have any type of value to humans. 
A) rain forests are biologically less diverse than other ecosystems on Earth. 
B) the number of tree species and butterfly species are about the same throughout the ecosystems of the world. 
C) rain forests are biologically more diverse than other ecosystems. 
D) as many as 400 species a day are lost due to human activity. 
E) rain forests do not have any type of value to humans.

Question 8

Choose which of the following statements is a hypothesis for an experiment.

Accepted Answer

A) Based on the data collected during an experiment,S.aureus grows better at body temperature than room temperature. 
B) Based on observation,it is predicted that S.aureus will grow better at body temperature than at room temperature. 
C) S)aureus grew equally well at room temperature and at body temperature. 
D) Based on the data collected during the experiment,it is confirmed that S.aureus grew better at room temperature. 
A) Based on the data collected during an experiment,S.aureus grows better at body temperature than room temperature. 
B) Based on observation,it is predicted that S.aureus will grow better at body temperature than at room temperature. 
C) S)aureus grew equally well at room temperature and at body temperature. 
D) Based on the data collected during the experiment,it is confirmed that S.aureus grew better at room temperature.

Question 9

Which of the following terms best describes a conceptual scheme in science that is strongly supported,has not yet been found incorrect,and is based on the results of many observations?

Accepted Answer

A) a scientific model 
B) an experiment 
C) descriptive research 
D) a scientific theory or principle 
E) experimental results 
A) a scientific model 
B) an experiment 
C) descriptive research 
D) a scientific theory or principle 
E) experimental results

Question 10

Which definition best describes a population?

Accepted Answer

A) the members of a species in a given area 
B) the interaction between the organisms and their environment 
C) the region of Earth that contains living organisms 
D) the interaction between various groups of organisms in a given environment 
E) all of the females of a given species in a particular area 
A) the members of a species in a given area 
B) the interaction between the organisms and their environment 
C) the region of Earth that contains living organisms 
D) the interaction between various groups of organisms in a given environment 
E) all of the females of a given species in a particular area

Question 11

Which of the following domains contains prokaryotes that are known for living in extreme environments?

Accepted Answer

A) Archaea 
B) Bacteria 
C) Plantae 
D) Fungi 
E) Eukarya 
A) Archaea 
B) Bacteria 
C) Plantae 
D) Fungi 
E) Eukarya

Question 12

Dr.James performed another experiment.Instead of inoculating the test tubes with Staphylococcus,he used the bacterium,Streptococcus.He found that Streptococcus grew better at body temperature than at room temperature.This is a replicate of the first experiment.

Accepted Answer

A) True 
 B)False

Exam 1: A View of Life

Which of the following features are present at the ecosystem level?

Climate change is primarily due to an imbalance in the chemical cycling of the element carbon.

Due to human activities,more carbon dioxide is being released into the atmosphere than is being removed.What happens to this extra carbon dioxide? Select all that apply.

To ensure a controlled experiment,all of the following conditions (variables)should be identical in Group 1 and Group 2:

In the scientific method,what precedes the formation of the hypothesis?

Choose which of the following statements is a hypothesis for an experiment.

Which of the following terms best describes a conceptual scheme in science that is strongly supported,has not yet been found incorrect,and is based on the results of many observations?

Which definition best describes a population?

Which of the following domains contains prokaryotes that are known for living in extreme environments?

Dr.James performed another experiment.Instead of inoculating the test tubes with Staphylococcus,he used the bacterium,Streptococcus.He found that Streptococcus grew better at body temperature than at room temperature.This is a replicate of the first experiment.

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Viruses,bacteria,and Archaea

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development and Aging

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

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