Exam 1: The Nature of Science

The human heart pumps blood throughout the blood vessels in the body.This is a scientific

When a hypothesis is well constructed,a prediction can be made using a(n)"________" statement.

The group of 18 bats that were "sham injected" represents a ________ group that experienced ________.

Describe the main mechanism used to reduce researcher bias,or even prevent fraud,in science.

A way to visualize the breadth and scope of life,from the smallest structures of atoms and cells to the broadest interactions between living and nonliving systems that we can comprehend,is typically referred to as the biological ________.

A student complains about the requirement of taking a biology course.She states that she is capable of following the "set recipe" of the scientific method,but she does not believe that science is useful because it cannot answer all questions.Explain to this student the types of questions science can answer.Also address her misunderstanding of the scientific method.

A scientific hypothesis must be ________; if not,science cannot evaluate it.

A small,potentially living object was found.For this object to be considered alive,the object must

A scientific hypothesis must be constructed with which of the following characteristics?

A group of researchers conducted an experiment and collected the data presented in the graph below.The graph shows that the hypothesis was ________ because all members of the control group ________ while most of the members of both treatment groups ________ by the end of the study.

Organize the following concepts in order of broadest interactions between groups to the smallest structure and give a brief explanation of the concepts: biome,biosphere,community,ecosystem,organism,and population.

What is the MOST likely explanation for why all living organisms use the same genetic code stored in DNA?

Which of these characteristics of living organisms are present in viruses?

A scientist notices that a population of birds has decreased dramatically within one year and suspects that a newly introduced snail population may be affecting the bird population.Some individuals within the bird population eat snails,primarily,while other individuals avoid eating snails.Which of the following statements represents a prediction based on a well-constructed hypothesis for this observation?

People who exercise regularly have a lower average resting heart rate and blood pressure than people who do not exercise.Given this observation,develop a hypothesis and provide one prediction relating to that hypothesis.

Explain why hypotheses can be supported,but never proven absolutely true.

The genetic material used for reproduction by those organisms conventionally considered to be living is ________.

David Blehert and his research team captured 117 healthy bats to study in the laboratory and divided them into four groups.Group 1 was housed in an area free from Geomyces destructans.Group 2 was housed in an area that shared the same air as bats infected with WNS,but these bats did not have direct contact with the infected bats.Group 3 was housed in direct contact with other bats infected with WNS.Bats in group 4 were directly exposed to Geomyces destructans when it was applied to their wings.During the study period the bats were monitored for signs of WNS.In this experiment,the independent was ________ and the dependent variable was ________.

Your friend says to you,"You do not need to understand evolution to understand biology because evolution is just a theory." How would you explain to your friend that a "theory" in science is not "just a theory"?

Whenever we ________,we are proceeding scientifically.