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Cell Membrane
Hydrophilic Head and Hydrophobic Tail
Fluid Mosaic Model
Transport
Diffusion is the movement of particles from an area of high concentration to an area of
low concentration through the semi permeable cell membrane. The cell does not need to
use energy.
Diffusion
Osmosis is the diffusion of water from and area of high concentration to and area of low
concentration through the semi permeable cell membrane.
Osmosis
Active Transport is the movement of particles from an area of low concentration to an
area of high concentration through the semi permeable cell membrane. The cell does need
to use energy. The energy is in the form of ATP.
Active Transport
Classification
The Binomial Nomenclature system was developed by Carolus Linnaeus.
It has seven categories of classification
Kingdom
Phylum
Class
Order
Family
Genus
Species
Organisms are placed in the categories mainly based on structure. The categories show
evolutionary relationships among organisms. Kingdom is the broadest category and
Species is the most specific.
Organism names are written Genus and species where the Genus is always capitalized
and the species is lower case. Examples Felis leo
When given a series of names the mostly closely related organisms have the same genus.
Members of the same species are able to mate and create offspring.
Example
Felis leo
Homo sapien
Cannis lupine
Felis domestica
Felis leo and Felis domestica are the most closely related. They are both cats.
Be able to use and create a dichotomous key
Example