Exam 1: The Nature of Science

Match the correct term(s) with the sentence. -________ and ask questions about the natural world.

Which of the following would be a fact?

DNA is one of the features common to all known forms of life;

Living organisms maintain a constant internal environment by sensing and responding to their internal conditions.This stable maintenance of internal conditions is known as

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.

David Blehert and his research team captured 117 healthy bats to study in the laboratory and divided them into 4 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 they did not have direct contact with the infected bats.Group 3 was housed in direct contact with other bats infected with WNS.Group 4 was directly exposed to Geomyces destructans when it was applied to their wings.During the study period the bats were monitored for signs of WNS.What were the independent and dependent variables in this experiment?

Once supported by a predictable experimental outcome,a scientific hypothesis

Which of the following represents conducting an experiment?

A direct and repeatable observation of any aspect of the natural world can be considered a scientific ________.

Describe how DNA makes it possible for organisms to make new individuals like themselves.

Which of the following sequences correctly represents the biological hierarchy of a multicellular organism?

Match the correct term(s) with the sentence. -Suggest a ________ to explain your observations and questions.

During an experimental study,a control group is maintained under a standard set of conditions with no change in the independent variable.The ________ group is maintained under the same standard set of conditions as the control group,but the independent variable is adjusted.

Some questions fall outside the realm of science.Which of the following questions could NOT be answered using the scientific method?

A group of researchers conducted an experiment and collected the data presented in this graph.Which of the following statements are supported by the information in this graph?

Which of the following questions could NOT be used to develop a testable hypothesis?

A parent heard some celebrities on television stating there was a study published in 1998 that asserted a connection between the measles-mumps-rubella (MMR)vaccine and the onset of autism in children.The celebrities went on to say that after the MMR vaccine replaced the old simple measles vaccine in 1988 there was a 273 percent increase in autism rates during the next 11 years.The celebrities,however,did not reveal that the study published in 1998 included a sample size of 12 children who were already known to have some form of autism or similar developmental difficulties.They also did not present the evidence from hundreds of studies conducted since 1998 that show no connection between vaccines and the onset of autism.What was the hypothesis,regarding vaccines and autism,implied by the celebrities? Did the evidence they presented show a correlation or cause-and-effect relationship between vaccines and autism? State at least two obvious problems with the structure of the 1998 study.

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 they did not have direct contact with the infected bats.Group 3 was housed in direct contact with other bats infected with WNS.Group 4 was directly exposed to Geomyces destructans when it was applied to their wings.During the study period the bats were monitored for signs of WNS.Which group is the control group?

Victoria,who is 10 years old,wants to be a zoologist when she grows up because she loves animals.So,she decided to begin her training by "doing something scientific." Specifically,she weighed and measured the lengths of all the earthworms she could find in her yard and recorded the data in a notebook.She then made a graph showing the maximum,minimum,and average weights and heights of the earthworms.Was she doing something scientific?

A tissue is defined as