Biology
the study
of living 
things
Population
groups of 
organisms
of the same species at a perticular place and time.
Systems
groups of organs 
that cooperate to
perform a
specific function
Tissues
similar cells that perform 
a common function
organs
structures composed
of a number of tissues working 
together to preform
a specific task
Cells
smallest structural
units of a living
thing
all organisms
are made up of 
cells
Adaption
a change that an 
organism makes
to better suit the 
environment
one celled 
organisms are
called unicellular
Organism
a complete
living thing
Atoms
have equal protons
and electrons
electrons in the 
outer orbital are
called valence electrons
atomic mass- electrons 
plus protons
Periodic Table Of
Elements
elements in the same
horizontal row have the 
same number of 
valence electrons
elements in the same 
vertical column have
the same number of 
orbitals
Chemical Reactions
a process that changes 
substances into other 
substances
catalyst- a substance
that accelerates the rate 
of a chemical reaction
activation energy- 
energy that is needed 
to start a chemical
reaction
Lipids
fats, oils, waxes,
steroids
Carbohydrates
sugars and starches
Cell Theory
cells are the basic 
unit of structure and
uncion
cells come 
from cells
all living things
are made from 
cells
Inside the Cell
chloroplasts contain 
chlorophyll (only
in plants)
vacuoles- store 
water, liquids,
and waste
ribosomes
make protein
eukaryotes- have nucleus
prokaryotes- no nucleus
mitochondria-
powerhouse
of cell
nucleus-
control
center
prokaryotes-
bacteria
eukaryotes-
people
Diffusion
high consintrated
area to low consinrated
area
Osmosis
water passing 
through a 
membrane
when the number 
of solutes in the 
cell...
is the same- isotonic
has more inside the cell 
then out- hypotonic
has more outside
of the cell- hypertonic
Aerobic
or 
Anaerobic
to have O2
no O2
Kreb's Cycle
one step of 
glycolosis
releases CO2
makes ATP
Habitat
a place where a
certain species
live, and feed
Producers
Consumers
Carnivors
Omnivors
Herbivors
make their own 
food
eat other
things
eat only
animals
eat both
plants and
animals
eat only
plants
Mutualism
Parasitism
Commensalism
both benefit
1 benefits other
is harmeed
1 benefits the
other is not 
harmed or 
helped