CBIO 2200 Lecture Notes - Lecture 3: Cell Membrane, Facilitated Diffusion, Osmosis

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Published on 22 Aug 2016
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Notes for CBIO 2200 CRN17428 CH3
1. Generalized Cell Structure
a) 3 general areas to be studied more in detail
Nucleus
Plasma Membrane
Cytoplasm and associated organelles
2. Plasma Membrane
a) Lipids (mostly phospholipids)
b) Proteins
c) Other
3. Transport of substances across membranes
a) Passive processes (Do NOT require energy input by the cell
i) Simple diffusion
ii) Facilitated diffusion
iii) Osmosis
Movement of H2O across a membrane
Describing the differences in solution concentrations
across a permeable membrane
a) Isotonic
b) Hypertonic
c) Hypotonic
iv) Filtration
Due to pressure of the fluid
b) Active processes (require some sort of energy)
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