CH 1 1-1 3 Review Worksheet

J.M.J.
Name ___________________________________
Biology Chapter 1
Period ________
Date _________
Chapter 1.1-1.3 Review

Write true if the statement is true or false if the statement is false.
_____ 1. A hypothesis must be based on scientific knowledge.
_____ 2. A scientific theory is a guess about how or why something happens.
_____ 3. Scientists make predictions that tell what will happen under any and all conditions.
_____ 4. The scientific method includes the steps involved in a scientific investigation.
_____ 5. Did life on Earth evolve over time? This question can be answered scientifically.
_____ 6. Experiments are performed under controlled conditions.
_____ 7. Scientists can study all aspects of the natural world, including experimenting on
an extinct animal.
_____ 8. The dependent variable is always the opposite of the independent variable.
_____ 9. Communicating your results allows others to test your hypothesis.
_____ 10. Experimental evidence that agrees with your prediction supports your hypothesis.
_____ 11. The first step in a scientific investigation is always to develop a hypothesis.
_____ 12. Scientists gradually build an increasingly accurate and detailed understanding of
the natural world.
_____ 13. Newton discovered the law of gravity when an apple fell from a tree and hit him on
the head.
_____ 14. Scientific evidence is any type of data that may either agree or disagree with a
prediction.
_____ 15. Scientific theories are broad explanations that are widely accepted as true.
Put the correct answer in the blank.
_____16. Assumptions scientists make include:
a) Nature can be understood through systematic study.
b) scientific ideas never need to be revised.
c) Science can provide answers to all questions.
d) all of the above
_____17. A hypothesis
a) is the First step in a scientific investigation.
b) is based on what a scientist believes.
c) is a possible question to a scientific answer.
d) can be proved incorrect.
_____18. A scientific theory
a) is based on lots of evidence.
b) is a guess about how or why something happens.
c) can never be altered or changed.
d) none of the above
_____19. To test a hypothesis,
a) a scientist First collects evidence.
b) a scientist First draws conclusions.
c) a scientist First makes a prediction. d) a scientist First makes observations.
_____20. Which is the correct order in a scientific investigation?

a) ask a question, test the hypothesis, communicate results, draw conclusions
b) make observations, ask a question, form a hypothesis, test the hypothesis
c) draw conclusions, ask a question, form a hypothesis, test the hypothesis
d) ask a question, make observations, test the hypothesis, draw conclusions
_____21. An experiment
a) is performed under controlled conditions.
b) generally tests how one variable is affected by another.
c) contributes important evidence that helps scientists better understand the
natural world.
d) all of the above
_____22. Food chains are scientific models that
a) represent simple systems in nature.
b) make the scientific systems easier to understand.
c) are based on mathematical equations.
d) are based on a prediction.
_____23. Science cannot answer all questions.
a) The above statement is true because science cannot answer matters of belief.
b) The above statement is true because all science is based on logic.
c) The above statement is false because science can prove that life evolves over
time.
d) The above statement is false because science is based on observations and
evidence.
_____24. Consider the following statement: "If all vertebrates have backbones, and turtles
are vertebrates, then turtles have backbones." This statement is an example of
a) a hypothesis. b) inductive reasoning. c) rationalization. d) deductive reasoning.
_____25. A hypothesis is
a) the same as a theory.
b) a tentative answer to some question.
c) an explanatory idea that is broad in scope and supported by a large body of
evidence.
d) a widely accepted idea about a phenomenon.
_____26. You notice that over the past month, many students on campus have started
wearing a new style of school sweatshirt. You think to yourself that perhaps the
bookstore has recently started selling this new sweatshirt style. This prediction is
an example of
a) an experimental question.
b) a type of observation.
c) a hypothesis.
d) an experiment.
_____27. A theory is
a) an explanation of an idea that is broad in scope with multiple lines of evidence.
b) a concept in the early stages that still needs to be tested.
c) a belief that has been accepted by all scientists as fact.
d) a description of a belief that invokes the supernatural.
_____28. To be scientifically valid, a hypothesis must be
a) phrased as a question.
b) based on faith.
c) controlled.
d) testable and falsifiable.
_____29. The role of a control in an experiment is to

a) provide a basis of comparison to the experimental group.
b) prove that a hypothesis is correct.
c) ensure repeatability.
d) prove that a hypothesis is correct and ensure repeatability.
_____30. A scientist performs a controlled experiment. This means that
a) the experiment is repeated many times to ensure that the results are accurate.
b) the experiment proceeds at a slow pace to guarantee that the scientist can
carefully observe all reactions and process all experimental data.
c) two experiments are conducted, one differing from the other by only a single
variable.
d) two experiments are conducted, one differing from the other by two or more
variables.
Vocabulary II
Fill in the blank with the appropriate term. Put the letter in the blank on the left.
A.
B.
C.
belief
D. experiment
communicating
E. law
evidence
AB. method
AC. observation
AD. question
AE. science
BC. science
BD. theory
BE. world
_____31. An ____________ is anything that is detected either through human senses or

with instruments and measuring devices that extend human senses.
_____32. An ____________ is a special type of scientific investigation that is performed
under controlled conditions.
_____33. A scientific____________ is a statement that describes what always happens
under certain conditions in nature.
_____34. A model is a representation of part of the real ____________.
_____35. ____________ is any type of data that may either agree or disagree with a
prediction.
_____36. Scientific investigation is done by following the scientific____________.
_____37. The goal of ____________ is to understand the natural world.
_____38. A hypothesis is a possible answer to a scientific____________.
_____39. Matters of ____________ are outside the realm of science.
_____40. A scientific____________ is a broad explanation for events that is widely
accepted as true.
_____41 The last step in a scientific investigation is ____________ what you have learned
with others.
_____42. ____________ is a distinctive way of gaining knowledge about the natural world
that starts with a question and then tries to answer the question with
evidence and logic
Critical Writing
Thoroughly answer the question below. Use appropriate academic vocabulary and clear and
complete sentences.
1.
Discuss why science is not able to answer all questions. Incorporate the steps of the
scientific method into your response.
J.M.J.
Name ___________________________________
Biology Chapter 1
Period ________
Date _________
Review 1.4-1.8
Check yourself on the differences between Theories and Laws at:
http://www.nasa.gov/pdf/371711main_SMII_Problem23.pdf
Write true if the statement is true or false if the statement is false.
_____ 1. A cell is the basic unit of the structure and function of all living things
_____ 2. An adaptation is a characteristic that helps a living thing survive and
reproduce.
_____ 3. Natural selection is a change in the characteristics of living things over time.
_____ 4. A population consists of many different species.
_____ 5. Charles Darwin developed the theory of evolution by natural selection.
_____ 6. All living things must maintain homeostasis.
_____ 7. The characteristics of all living things are controlled by genes.
_____ 8. The four unifying principles of biology are the cell theory, the gene theory,
homeostasis, and gravity.
_____ 9. Deer sometimes eat the starlings (birds) that sit on them.
_____ 10. The cells of many different organisms are very similar.
_____ 11. Simple life forms, like bacteria, have simple chemistry.
_____ 12. Simple life forms, like bacteria, do not grow and develop.
_____ 13. Every living thing begins life as a single cell.
_____ 14. The moles touch organ is an adaptation because it helps the mole survive
in its
dark.
_____ 15. There are at least 100 million different species live on Earth today.
Critical Reading
Read this passage from the text and answer the questions that follow.
Evolution of Life
The diversity of life on Earth today is the result of evolution. Life began on Earth at
least 4 billion years ago, and it has been evolving ever since. At First, all living things on
Earth were simple, single-celled organisms. Much later, the First multicellular organisms
evolved, and after that, Earths biodiversity greatly increased.
Today, scientists accept the evolution of life on Earth as a fact. There is too much
evidence supporting evolution to doubt it. However, that wasnt always the case.
Darwin and the Theory of Evolution
The idea of evolution has been around for centuries. In fact, it goes all the way
back to the ancient Greek philosopher Aristotle. However, evolution is most often
associated with Charles Darwin. Darwin published a book on evolution in 1869 titled On
the Origin of Species. In the book, Darwin stated the theory of evolution by natural
selection. He also presented a great deal of evidence that evolution occurs. Despite all
the evidence Darwin presented, his theory was not well received at First. Many people
found it hard to accept the idea that humans had evolved from an ape-like ancestor, and
they saw evolution as a challenge to their
religious beliefs. Darwin had actually expected this type of reaction to his theory and
had waited a long time before publishing his book for this reason. It was only when
another scientist, named Alfred Wallace, developed essentially the same theory of
evolution that Darwin put his book into print.
Although Darwin presented a great deal of evidence for evolution in his book, he
was unable to explain how evolution occurs. Thats because he knew nothing about
genes. As a result, he didnt know how characteristics are passed from parents to
offspring, let alone how they could change over time.
Evolutionary Theory After Darwin
Since Darwins time, scientists have gathered even more evidence to support the
theory of evolution. Some of the evidence comes from fossils, and some comes from
studies that show how similar living things are to one another. By the 1930s, scientists
had also learned about genes. As a result, they could finally explain how characteristics
of organisms could pass from one generation to the next and change over time.
Using modern technology, scientists can now directly compare the genes of living
species. The more genes different species share in common, the more closely related
the species are presumed to be. Consider humans and chimpanzees. They share about
98% of their genes. This means that they shared a common ancestor in the not-toodistant past. This is just one of many pieces of evidence that show we are part of the
evolution of life on Earth.
Questions (answer in complete sentences)
1.
What were the First living things on Earth?
2.
Who is most often associated with developing the theory of evolution?
3.
What is the name of the process by which evolution occurs?
4.
What discovery allowed scientists to explain how characteristics are passed from
parents to offspring?
5.
Cite one piece of evidence that demonstrates we are evolutionarily closely related
to chimpanzees.

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J.M.J.

Chapter 1.1-1.3 Review

_____20. Which is the correct order in a scientific investigation?

_____29. The role of a control in an experiment is to

_31. An ________ is anything that is detected either through human senses or

What were the First living things on Earth?

Who is most often associated with developing the theory of evolution?

What is the name of the process by which evolution occurs?

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