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.F) A) and C)
G) B) and E)

Question 2

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.E) A) and D)
F) C) and D)

Question 3

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 resultsF) B) and C)
G) D) and E)

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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.E) B) and C)
F) A) and C)

Question 6

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.F) A) and D)
G) All of the above

Question 7

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 bacteriaE) B) and D)
F) B) and C)

Question 8

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)  EukaryaF) A) and E)
G) C) and E)

Question 9

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 areaF) B) and E)
G) A) and B)

Question 10

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

Accepted Answer

A)  a prediction
B)  experimentation
C)  analysis of results
D)  observationE) None of the above
F) C) and D)

Question 11

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.F) B) and D)
G) B) and E)

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?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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.

Correct Answer
verified

Which definition best describes a population?

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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?

Correct Answer
verified

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

Correct Answer
verified

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.

Correct Answer
verified

Exam 1: A View of Life

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

Which definition best describes a population?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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