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Physiology
Chapter 3
Question | Answer |
---|---|
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) |