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Chapter 3

Plasma membrane barrier between cell &external env.
Internal Component of cell Nucleus & cytoplasm(cytosol&organelles)
Peripheral Proteins act as secondary messanger
Glycoproteins proteins & carbohydrate chains binding
Glycolipids important in cell recognition
What does the Nucleus contain nucleur pore(control opening&closing) *chromatin(stores DNA) *nucleolus(RNA transcribed here) *Cytoso
Cytosol function location of specific chem. rxn *storage of fats&carbohydrates *storage of secretory vessicles
Cytosol Organelles Structure made up of variety of biomolecules &they carry specific functions in cell
Endoplasmic Reticulum (ER) Network of membrane enclosing interior compartment called lumen
Lumen empty space surrounded by external structure
Rough ER Has ribosomes on surface *synthesis of proteins
Smooth ER No Ribosomes on surface *synthesis of lipids(triglycerides&steroids)
Golgi apparatus Looks like pancake, located between ER&cell membrane
Function of Golgi apparatus Further processing of proteins *packaging proteins into vessicles & directing them to targets
mitochondria powerhouse for cells *just inside the cristae are enzymes responsible for synthesizing ATP
Which organ has the highest conc. of mitochondria? Heart, next is brain then liver
Cytoskeleton Support system of cell
Function of Cytoskeleton provides mechanical support&structure *intercellular transport of material *formation of adhesion w/other cells *contraction&movement
Types of Filaments Microfilamen(smallest/thin) *intermediate*microtubules(largest/thick)
Created by: izis



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