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NorahEricksonTheCell (Organelles (Endoplasmic Reticulum (ER) (Rough ER…
NorahEricksonTheCell
Organelles
Plasma Membrane
Barrier of protection, allows select molecules to pass
Ribosomes
produce proteins
Endoplasmic Reticulum (ER)
Rough ER
produces proteins
smooth ER
metabolizes lipids and stores calcium
Golgi Apparatus
packages proteins for shipment
Lysosomes
break down used proteins/ other desbris
Mitochondria
make energy
Peroxisomes
neutralize/remove toxic stuff
cytoskeletal elements
maintain cell shape
Nucleus
Directs cell opperation
Major Components of a Cell
Plasma Membrane
outside wall of the cell holds the cell together, protects from invaders
simple diffusion
fat soluble molecules
osmosis
water
facilitated diffussion
use specific proteins to cross the plasma membrane
active transport
moving molecules against the concentration gradient; requires energy
Cytoplasm
Jelly like substance that fills the inside of a cell and surrounds organelles
Nucleus
space where dna of the cell is housed
Endocytosis
the way large particles and macromolecules enter cells
Phagocytosis
Cell eating
most often seen in white blood cells
Pinocytosis
cell drinking- sampling extracellular fluid
receptor-mediated-endocytosis
selective transport, substance binds to receptors on the cell and are brought through the membrane
Exocytosis
active mechanism that move substances out of the cell