Question 1

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 the fungus 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.Which group is the control group?

Accepted Answer

The control group in an experiment is the group that does not receive the treatment or exposure being tested. In this case, group 1 was housed in an area free from the fungus, meaning they did not receive exposure to the fungus or infected bats. Therefore, group 1 is the control group.

Question 2

A patient is coughing and producing a wheezing sound as she breathes; she also has a fever.She goes to the doctor who listens to her chest,takes X-rays of her chest,and determines that she probably has something called croup.Which of the following are the facts in this scenario?

Accepted Answer

The answer of A patient is coughing and producing a...

Question 3

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

Accepted Answer

The experiments and hypotheses developed by Robert Koch and other scientists regarding the cause of communicable diseases contribute to the germ theory of disease, which states that infections are caused by microorganisms such as bacteria, viruses, and fungi. This theory has been widely accepted and has had significant impacts on public health and medical practices.

Question 4

Which of the following would be a theory?

Accepted Answer

The answer of Which of the following would be a...

Question 5

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 researchers applied it to the bats' wings.During the study period the bats were monitored for signs of WNS.What is the specific hypothesis being tested by the inclusion of group 4 in this experiment?

Accepted Answer

By directly exposing the bats in group 4 to Geomyces destructans, the researchers were testing whether the fungus alone could cause WNS without the need for contact with infected bats. Therefore, the specific hypothesis being tested is that Geomyces destructans causes WNS and it can be transmitted by direct contact with the fungus; no contact with infected bats is needed for transmission of the fungus.

Question 6

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

Accepted Answer

The fact that the human heart pumps blood throughout the blood vessels in the body is an established and proven reality, making it a fact. A theory is a well-substantiated explanation for a set of observations, while a hypothesis is a tentative explanation that requires further testing. An experiment is a procedure designed to test a hypothesis.

Question 7

Bats use echolocation to orient themselves and locate objects.Doing this requires special adaptations in their inner ear,midbrain,and auditory cortex of their cerebrum.The echolocation system of bats is an example of a(n)

Accepted Answer

The echolocation system of bats involves adaptations in multiple organs and tissues, including the inner ear, midbrain, and auditory cortex. Therefore, it is an example of an organ system.

Question 8

Scientists are human beings and,like all human beings,are susceptible to personal and group biases that may influence how they interpret evidence.Before original research work is accepted and added to a growing body of scientific understanding,perhaps even contributing to our understanding of an important scientific theory,it must be scrutinized by experts in the field who have no direct connection to the research under review.The main mechanism for doing this is

Accepted Answer

Peer-reviewed publications are the main mechanism for scrutinizing original research work by experts in the field who have no direct connection to the research under review. This helps to reduce the impact of personal and group biases and ensures that the research is of high quality before it is accepted into the scientific understanding. Popular magazines, the Discovery Channel, and Wikipedia are not subjected to the same rigorous peer-review process and may not always present accurate scientific information.

Question 9

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?

Accepted Answer

Scientific understanding is based on current knowledge, which can evolve and change with new observations, tools, and interpretations. This means that scientific knowledge is not absolute or unchanging, but rather a dynamic process. The statement that scientific knowledge is a static or rigid collection of invariable facts (choices C and D) is incorrect based on this understanding.

Question 10

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

Accepted Answer

The correct biological hierarchy is cells form tissues, tissues form organs, and organs form an individual organism.

Question 11

A patient often experiences numbness and pain in the thumb and first two fingers on his right hand.He goes to the doctor,who suspects that carpal tunnel syndrome is the reason for the numbness and pain.The doctor then orders a simple test to see how fast nerve impulses are moving up and down the patient's arm.The doctor's preliminary diagnosis of carpal tunnel syndrome is a(n)

Accepted Answer

The doctor's preliminary diagnosis of carpal tunnel syndrome based on the symptoms described is a hypothesis. A hypothesis is an educated guess or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Question 12

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 ________.

Accepted Answer

The independent variable is the type of exposure to Geomyces destructans (as the researchers intentionally manipulated this factor), and the dependent variable is whether the bats became sick with WNS (as this is what the researchers are measuring).

Question 13

A tissue is defined as

Accepted Answer

A tissue is a group of cells that work together to carry out a specific function in the body. Options B, C, and D are not accurate definitions of tissues.

Question 14

The information presented in the following figure represents a scientific

Accepted Answer

The answer of The information presented in the following figure...

Question 15

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

Accepted Answer

The caves in upstate New York can be considered an ecosystem, which refers to the living and nonliving components of a particular environment and the interactions that occur between them. The bats, as well as other organisms that may inhabit the caves, would be part of this ecosystem. The biosphere refers to the sum total of all ecosystems on Earth, and the biome refers to a large-scale community of plants and animals in a particular habitat. The community refers to all the different populations of species that live in the same location and interact with each other.

Question 16

In science,when a hypothesis or group of hypotheses supported by repeated experimental evidence holds true through time,it can be developed into a

Accepted Answer

When a hypothesis or group of hypotheses is supported by repeated experimental evidence and holds true through time, it can be developed into a theory. A hypothesis is an educated guess or proposed explanation for a phenomenon, while a theory is a well-substantiated explanation that has been repeatedly confirmed through diverse experiments and observations. Therefore, a theory has more evidence and is more established than a hypothesis. Laws and mathematical theorems are different types of scientific laws that also involve repeated experimental data and mathematical calculations, respectively, but they are not the same as a scientific theory.

Question 17

Which of the following would be a fact?

Accepted Answer

The answer of Which of the following would be a...

Question 18

Carbon,hydrogen,and oxygen atoms are held together by chemical bonds to form ________ of sugar.

Accepted Answer

Carbon, hydrogen, and oxygen atoms combine in specific ratios to form molecules of sugar. Organ systems and cells consist of a variety of different molecules, and atoms alone cannot form sugar without bonding with other atoms.

Question 19

A researcher studying a group of individuals of the same species living and interacting in a shared environment is said to be working at the level of a

Accepted Answer

A researcher studying a group of individuals of the same species living and interacting in a shared environment is working at the level of a population. A community refers to all the populations of different species living and interacting in a shared environment, while a biome refers to a large geographic region with a specific climate and plant and animal life. The biosphere refers to all of Earth's ecosystems collectively.

Question 20

Which of the following represents conducting an experiment?

Accepted Answer

Dialing a telephone number can be seen as conducting an experiment because it involves a specific action to test a hypothesis or achieve a result, such as whether the call will connect to the intended recipient.

Quiz 1: The Nature of Science