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Chapter: 1

Outline reading log for Bio 101 D
Biology: A Guide to The Natural World By David Krogh
Name:​_________________
Chapter:​____________

Important Ideas and Information in the Text (p
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1
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2 ​What is Science?
● Science is a body of knowledge about the
natural world
Fall 2015 Bio 101 DE

My Thoughts, Feelings, Questions

 

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It is a way of learning
A collection of unified insights about nature
referred to as theories
● In science a theory is a general set of
principles supported by evidence that
explains some aspect of nature
● A more valued entity than scientific fact,
because they have explanatory power
● Science is a theory building business not fact
finding business
● Science as a process
● Referred to as scientific method
(understanding the natural world through
observation and testing of hypothesis)
● Starts with an observation
● Next a question
● Hypothesis​ is a tentative testable explanation
for an observed phenomenon
● Several may be proposed
● A series of experiments show which is the
answer
● All properly executed scientific ​experiments
must have rigorous controls meaning that all
aspects of the experiment must be held
constant except for the condition, known as a
variable​, which is being tested for
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Every assertion regarding the natural world is
subject to challenge and revision based solely
on evidence
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the assertion that “UFOs
are visiting earth” does not rise to the level of
a scientific claim because there is no way to
prove that this is not so
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Put another way, supernatural explanations
for the workings of nature lie outside the
realm of science and thus cannot be
examined through the scientific process
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Biology​ can be defined as the study of life
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Possess an inherited information base,
encoded in DNA, that allows them to function
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Are composed of one or more cells
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Are highly organized compared to inanimate
objects
● Life is highly organized in a hierarchal
manner
● Atoms come together to form molecules
● Molecules form organelles
● These are not living things but are
component parts of life
● Cells are the fundamental units of life
● A collection of them are tissues
● Several kinds of tissues form an organ
● Several organs make an organ system
● Organ systems and organs can then form an
organism
● A species of organisms living together is a
population
● All the living things in a area is a community
● A community and the non living elements it
interacts with is an ecosystem
● All the communities of earth and their
ecosystems form the biosphere
● Life is tremendously complex because it is
tremendously diverse
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(veterinary medicine and
forestry)
Biology has ancient origins (aristotle), but did
not become a science until the 19th century
Before this biology was descriptive
In 1820’s biologists began to formulate
biological theories
Life exists in cells, life comes from life

Fall 2015 Bio 101 DE

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Chapter: 1
They essentially began describing the rules of
the living world instead of forms
Each species is at least marginally different
from another

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