Cell
functional and structural unit of all living things
*all cells must carry out certain functions to sustain life
3 main parts of a cell
1.Nucleus
2.Plasma Membrane
3.Cytoplasm
Nucleus
-contains genetic information
-the control center of a cell
Chromatin
-loose threadlike material dispersed throughout the nucleus when the cell is not dividing
*within nucleus
Chromosomes
-results when the chromatin coils during the process of cell division
*within nucleus
Nucleoli
-composed primarily of proteins & RNA
-assembly sites for ribosomal particles
*1 or more
Ribosomes
protein synthesizing
Nuclear envelope
double layered porous membrane lining the nucleus
Nuclear Pores
-helps with the passage of proteins and RNA molecules
-regulates what can and can not pass through
-covers the nuclear envelope
Plasma Membrane
-separates cell contents from the surrounding environment
-made up of fats & protein molecules
-determines which substances may enter and leave and in what quantity