Exam 1: The Nature of Science

Is it possible for scientists to study events that happened or animals/plants that lived millions of years ago?

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

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?

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?

In 1890, Robert Koch developed a hypothesis regarding the cause of communicable diseases. He designed an experiment and collected data that supported his hypothesis. Later, his experiment was repeated by many other scientists who used other pathogens and documented similar results that not only supported their hypotheses but also supported Koch's original hypothesis. These many experiments that supported multiple hypotheses regarding the cause of communicable diseases contributed to the development of the

A species of butterflies gradually becomes darker in color over many generations; this is an example of which characteristic of living organisms?

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

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

The caves in upstate New York, where Alan Hicks' team first noticed the deaths of thousands of bats, represent the

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

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

Which term best describes the temperate deciduous forests that cover the northeastern United States, including the Adirondack Mountains?

Which of the following statements is true?

The claim has been made that women may be able to achieve significant improvements in memory by taking Gingko biloba supplements. To determine if the claim is fraudulent and prior to accepting this claim, what type of evidence would you like to see? Provide brief details of an investigative design.

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

Is it important for scientists to communicate their results to fellow scientists?

After observing that students who regularly attend class appear to be making good grades, I propose the hypothesis that regular class attendance increases the probability that students earn higher grades. If I attend classes regularly this semester, I should make higher grades than I did last semester when I often missed class. This is a ________.

Scientific understanding can always be challenged, and even changed, with new ways of observing and with different interpretations. For example, new tools and techniques have resulted in new observations and the discovery of additional information. This has resulted in revised ways of understanding how molecules are moved across the plasma membrane of cells. Hence, there is no certainty in science, only degrees of probability (likelihood) and potential for change. In light of this understanding, which of the following statements is most meaningful?

Whenever we ________, we are proceeding scientifically.

Recently, beekeepers have noticed an alarming and sudden disappearance of honeybees from their hives. Some beekeepers and environmentalists worry that crops genetically engineered to contain the gene for the Bt insecticidal toxin may be killing the bees. Without data from a scientific experiment, is it reasonable to state that Bt-containing crops are responsible for the loss of honeybees?