Principles Of Biology Exam 1

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Terms Used To Study For My BIOL 1050 First Exam, Principles Of Biology. These Are Just General Biology Terms.

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The study of life
 
biology
Begins with specific observations(facts), draws general conclusion, used to form scientific hypothesis
 
inductive reasoning
Starts with general idea, makes specific predictions that follow logically
 
deductive reasoning
The concerted human effort to understand, or to understand better, the history of the natural world and how the natural world works, with observable physical evidence as the basis of that understanding.
 
science
A statement that provides some explanation for the observed facts
 
hypothesis
The variable that is measured, counted, or observed
 
dependent variable
The variable that is manipulated
 
independent variable
Independent variable is held at a constant level or omitted
 
control
Method or sequence of steps performed for the experiment
 
procedure
Repeating the experiment several times to provide consistent results
 
replication
Observation that is subjective(colors, smells, etc...)
 
qualitative
Observation that includes facts or measurements
 
quantitative
The capacity to do work
 
energy
The set of chemical reactions that occur in living organisms to maintain life.
 
metabolism
Molecules and structures that detect stimuli
 
receptors
A specific form of energy that a receptor can detect
 
stimulus
To maintain relatively constant internal conditions
 
homeostasis
Reproduction which requires the two cells from different individuals to unite to produce the first cell of a new organism.
 
sexual reproduction
Reproduction in which a single organism can reproduce without the aid of another.
 
asexual reproduction
Fundamental form of matter that cannot be broken down into a different form of matter by ordinary chemical means
 
element
Smallest unit of an element that retains the element's properties, consist of three subatomic particles
 
atom
Atom that varies in neutron number
 
isotope
Union between the electron structures of two or more atoms
 
chemical bond
Occurs when two or more elements intermingle in proportions that can vary
 
mixture
3 kinds of chemical bonds
 
ionic, covalent, hydrogen
8 characteristics of living things
 
Assimilate and use energy, Can respond to their environment, Maintain relatively constant internal conditions, Possess an inherited information base in DNA, Can reproduce, Are composed of 1 or more cells, Evolved from other living things, Are highly organized on different levels
Bond in which atoms of opposite charge attract each other
 
ionic bond
An atom that has either lost or gained one or more electrons
 
ion
Bond in which atoms share outer-shell electrons with other atoms
 
covalent bond
Bond in which a weak attraction forms when the positive end of 1 polarized molecule is attracted to the negative end of another
 
hydrogen bond
Type of covalent bonding in which distribution of charge is symmetrical
 
nonpolar
Type of covalent bonding in which distribution of charge is asymmetrical
 
polar
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