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Life 102 exam 1
n/a
23
Biology
Undergraduate 1
09/12/2009

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Term
biology is:
Definition
the study of life
Term
the properties of life are:
Definition
order,adaption, response to environment, regulation,energy processing, growth and development, reproduction
Term
scientific method
Definition
observation,question,hypothesis, testable prediction, falsify or accept prediction
Term

uniformity:

 

Definition
exhibited mostly on molecular,cellular, and population level
Term
evelution explains:
Definition
lifes diversity and uniformity
Term
uniformity explains
Definition
a common ancestor
Term
diversity has arisen by
Definition
evolution, natural selection
Term
diversity:
Definition
cell strecture, number of sells in an organism
Term
living matter is made of:
Definition
substances that cannot be broken up anymore (elements)
Term
HONK
Definition

the 4 most abundent elements to life 96%:

hydrogen

oxygen

nitrogen

carbon

Term
trace elements:
Definition
elements that are present in small amounts but needed for life
Term
atom
Definition
smallest unit of an element
Term
atomic structure of an element
Definition
determin its properties
Term

the 3 particles that make up an element are:

 

Definition

neutron

proton

electron

Term
atomic number is determined by
Definition
the number of protons
Term
atomic weight is
Definition
# of protons + # of neutrons
Term
ion:
Definition
atoms with one or more electrons 
Term
isotopes are
Definition
modified atoms, with the same number of protons, but different number of neutrons
Term
radioactive isotopes are
Definition
unstable, fall apart
Term
valence shell is
Definition
the outer most shell  (max 8 electrons)
Term
atoms want a
Definition
full valence shell by
Term
electrons can be            by atoms
Definition

sharing 

taken away

given away

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