Skin is sometimes referred to as the largest organ of the body. Why is skin considered to be an organ and not a tissue or some other structure?

Skin consists of multiple tissue types that cooperate to perform a specific task.

Skin consists of multiple cell types functioning as a single integrated unit.

Skin is a vital component of multiple organ systems.

Skin consists of a single cell type.

Which of the following is the correct organizational hierarchy, from largest to smallest, in the hierarchical order of life? (Some levels have been omitted, so you are looking for the correct order.)

Ecosystem → Community → Population → Organ → Tissue → Cell → Molecule → Atom

Community → Ecosystem → Population → Tissue → Organ → Cell → Organelle → Atom

Biosphere → Community → Population → Tissue → Organ → Cell → Atom → Molecule

Ecosystem → Population → Community → Organ system → Organ → Cell → Molecule → Atom

What is the main difference between an ecosystem and a community?

A community consists of living organisms only, while an ecosystem consists of both living organisms and their nonliving environment

A community and an ecosystem are the same thing in ecology

A community consists of both living organisms and their nonliving environment, while an ecosystem consists of nonliving components only

A community consists of nonliving components, while an ecosystem consists of living organisms

What is the core theme that unifies all of biology?

The theory of evolution by natural selection

The flow of information from DNA to proteins

The transformation of energy and matter

The relationship between structure and function

Which of the following is/are major themes in the field of biology?

All of the above are major themes in the field of biology

The relationship between structure and function

The flow of information from DNA to proteins

The interconnections within and between levels of biological organization

The scientific method ________.

is a rough recipe for answering questions, but the steps need not always need to be performed in the same order

is a linear process that must be precisely followed at all times

is undertaken only by trained scientists in a controlled laboratory setting

is the means by which absolute truth can be uncovered

Why should you be skeptical of the claims made in this commercial?

It was not a controlled study, but rather an anecdotal evidence.

Health cannot be tested via the scientific method.

You cannot believe anything you see on television.

Which of the following is a potential problem with the information presented?

All of the above are potential problems with the information presented.

There was a small sample size (only a few people presented).

There were no control groups presented.

There was no indication that the results were repeated.

Use the following study to answer the following question(s): A current trend among professional baseball players is to wear braided titanium necklaces. The titanium reportedly regulates the flow of energy through the body. The player wearing the necklace then shows improved strength, tires less, and recovers more quickly. Which of the following would be the strongest evidence for or against the necklace's effectiveness?

A bar graph comparing batting averages of the players who wear the official titanium necklace and those who were unknowingly wearing a fake titanium necklace

A bar graph comparing the percentage of players who wear the necklace with the percentage of players who do not wear the necklace

A scatter plot showing days on the disabled list and percentage of players who do or do not wear the necklace

A bar graph illustrating the satisfaction levels of the players who wear the necklace

What should one do if the results of an experiment consistently do not support the original hypothesis?

Reject the original hypothesis and formulate a new hypothesis.

Change the hypothesis to match the results.

Change the results to match the hypothesis.

Accept the original hypothesis.

Which of the following statements is correct regarding the process of science?

The process of science involves testing hypotheses, but also phases of exploration, communication and societal outcomes.

The process of science is all about testing hypotheses.

The process of science involves testing hypotheses, but also collecting data.

The process of science is all about developing new technologies.

What does the term theory mean to a scientist?

A hypothesis that has been supported by a large number of experiments

A proposed explanation for an observed phenomenon

A hypothesis that has been supported by the evidence of one experiment

Evaluate the following statements; which statement is accurate?

Scientists use the word theory to mean a hypothesis that has been supported by many experiments; non-scientists use the word theory to mean a hypothesis that remains to be well tested.

Scientists use the word theory in the same way that they use the word hypothesis; both mean a general idea that remains to be well tested.

Scientists use the word theory to mean a hypothesis that has been supported by many experiments; this is the same way non-scientists use the word theory.

Scientists use the word theory to mean a hypothesis that has not been tested many times; this is the same way non-scientists use the word theory.

Hypotheses must be ________.

All of the above are important characteristics of hypotheses.

A researcher applies varying amounts of fertilizer (0, 2, 4, 8, 10 units) to 50 potted tomato plants. All other variables that may affect the outcome (watering, temperature, sunlight, plant size, etc.) are kept the same from pot to pot. At the end of the growing season, the tomatoes grown on each plant are weighed to determine which fertilizer level produced the largest tomato yield. Which variable is the independent variable?

The tomato yield at the end of the growing season

The plant size at the end of the growing season

Use the following study to answer the following question(s): A researcher applies varying amounts of fertilizer (0, 2, 4, 8, 10 units) to 50 potted tomato plants. All other variables that may affect the outcome (watering, temperature, sunlight, plant size, etc.) are kept the same from pot to pot. At the end of the growing season, the tomatoes grown on each plant are weighed to determine which fertilizer level produced the largest tomato yield. Which variable is the dependent variable?

The tomato yield at the end of the growing season

The plant size at the end of the growing season

Is the study presented above a controlled experiment?

Yes, because only the amount of fertilizer was changed, everything else was kept the same.

Yes, because many pots were used.

No, because the experiment was done only once.

No, because several different amounts of fertilizers were used, not just one amount.

You decide to test the effects of Echinacea on 100 people who are experiencing similar cold symptoms. Which of the following groups would represent an appropriate control in your experiment?

100 sick people given tablets similar to Echinacea but with no herb

One healthy person given Echinacea tablets

One sick person given Echinacea tablets

100 healthy people given tablets similar to Echinacea but with no herb

If you give 100 sick people tablets similar to Echinacea but with no herb (called a placebo), and do not tell them whether they are receiving the placebo or the Echinacea tablet, what kind of control would this be?

A positive control, since you are expecting a change to happen in this control group

A negative control, since you are expecting no change to happen in this control group

A blind control, since the sick people do not know whether they are receiving the placebo or the Echinacea

You conduct the experiment and gather the data presented in the figure below. Given the results, you can say that ________.

your hypothesis is not supported

Which of the following represents a double-blind study?

Neither the test group nor the researchers know whether the test group is receiving a placebo or the actual treatment until all the data are collected.

The test group knows whether they are receiving a placebo or the actual treatment, and so do the researchers.

The test group does not know whether they are receiving a placebo or the actual treatment, but the researchers do.

The test group knows whether they are receiving a placebo or the actual treatment, but the researchers do not know until all the data are collected.

Which of the following represents a blind study?

The test group does not know whether they are receiving a placebo or the actual treatment, but the researchers do.

The test group knows whether they are receiving a placebo or the actual treatment, and so do the researchers.

The test group knows whether they are receiving a placebo or the actual treatment, but the researchers do not know until all the data are collected.

Neither the test group nor the researchers know whether the test group is receiving a placebo or the actual treatment until all the data are collected.

Which of the following statements cannot be tested by science?

It is wrong that male lions kill baby lions when taking over a new pride.

Male lions sleep 20 hours a day.

All statements can be tested by science.

You want to know whether cookies made with unbleached flour taste better than cookies made with bleached flour; which of the following has the strongest experimental design to test this question?

Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types without knowing which ones they are eating and rank which type they like best.

Make two batches of cookies, both with bleached flour; one taster tries both types and ranks which type they like best.

Make two batches of cookies, one with bleached flour and one with unbleached flour; one taster tries both types and ranks which type they like best.

Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types and rank which type they like best.

What is misleading about commercials that show "scientific proof" that laundry detergent X is better than another leading brand?

All of the above are aspects that are misleading.

We are shown only one tee-shirt becoming whiter in each detergent, not 20 tee-shirts in each detergent.

We do not know whether the same amount of each detergent was used for washing.

We do not know if everything besides the detergents was the same (machine used, type of stains, etc.).

A controlled experiment is one in which ________.

there are at least two groups, one of which does not receive the experimental treatment

there are at least two groups, one differing from the other by two or more variables

the experiment is repeated many times to ensure that the results are accurate

the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data

What does it mean when we say, "This scientific study was published in a peer-reviewed journal"?

This study was evaluated by qualified and impartial experts before being published.

This study can now be viewed on the Internet.

This study was published in a newspaper.

This study was not evaluated by other scientists.

What is the difference between a primary and a secondary source?

A primary source is the original material published by the scientists, whereas a secondary source is a description of the original material.

A primary source is the raw data before scientists publish, whereas a secondary source is a description of the original material.

A primary source is the original material published by the scientists, whereas a secondary source is the raw data before scientists publish.

There is no difference between primary and secondary sources.

Based on the table above, which type of cookie was the heaviest?

The cookies with intermediate amount of fat

The amount of fat did not affect the weight of cookies

Based on the table above, which cookies were the moistest?

The cookies with intermediate amount of fat

All cookies had the same moisture

Based on the table above, which of the following statements is not correct?

Cookies with the most fat were the cookies that were not only the thickest but also the largest in diameter.

Cookies with the most fat were the cookies that were not only the flattest but also the largest in diameter.

Cookies with the most fat were the cookies that were not only the flattest but also the driest with the least moisture.

Cookies with the least fat were not only the heaviest but also the thickest cookies.

Based on the table above, which of the following statements is correct?

The amount of fat in the cookies affects not only the cookies' weight and size but also their moisture. The effects of sugar on the cookies are unknown.

The amount of fat and sugar in the cookies affects not only the cookies' weight and size but also their moisture. The effects of sugar on the cookies are unknown.

The amount of sugar in the cookies affects not only the cookies' weight and size but also their moisture. The effects of fat on the cookies are unknown.

Fat and sugar do not affect the cookies' weight, size, and moisture.

Regardless of the amount of fat contained in cookies, the most common cell size in a cookie was ________.

very large (larger than 1,500 μm)

very small (smaller than 100 μm)

The Core Chapter 1 Test Review

Authored by Mandana Lagreca

Biology

University

NGSS covered

Used 1+ times

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56 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is life defined?

The only requirement for life is the ability to reproduce.

Life is defined through a set of shared characteristics that all living things display.

A living thing must be able to move.

Life is determined by neural activity.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a characteristic of life?

The ability to reproduce

The ability to move

The ability to grow and develop

The ability to respond to the environment

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fire can move, grow, reproduce, use energy, consume oxygen, and interact with its environment. Why is it not alive?

It does not have cells.

It does not consist of complex, well-ordered structures.

It does not pass on genes for traits to its offspring.

All of the above are accurate reasons why fire is not alive.

Is a virus considered alive?

Yes, it possesses all of the requirements for life.

Yes, it possesses enough of the requirements for life to be considered living.

No, it does not possess all of the requirements for life.

No, it does not possess any of the requirements for life.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Certain parasites, such as intestinal tapeworms, cannot survive outside of their host. Why are they still considered alive?

Survival outside of a host is not a requirement for life.

Parasites are still considered alive because they are studied by biologists, and biology is the study of life.

As long as parasites are made of cells, they are considered to be alive.

Because they cannot survive outside of the host, parasites are actually not considered alive.

DROPDOWN QUESTION

30 sec • 1 pt

A population consists of (a) .

living and nonliving components

interacting populations

a group of interacting individuals of one species

a group of interacting individuals from different species

DROPDOWN QUESTION

30 sec • 1 pt

The statement, "There are 628 gray squirrels living on campus," describes the (a) of gray squirrels on campus.

species

community

population

ecosystem

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The Core Chapter 1 Test Review

How is life defined?

Which of the following is not a characteristic of life?

Fire can move, grow, reproduce, use energy, consume oxygen, and interact with its environment. Why is it not alive?

Is a virus considered alive?

Certain parasites, such as intestinal tapeworms, cannot survive outside of their host. Why are they still considered alive?

A population consists of (a) .

The statement, "There are 628 gray squirrels living on campus," describes the (a) of gray squirrels on campus.

What is the smallest unit of life?

If you were to combine all of the ecosystems on the planet, you would obtain the ________.

A college campus – including the students, birds, trees, sidewalks, and air – makes up one complete ________.

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