Term
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Definition
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Term
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Definition
| Intracellular fluid containing organelles |
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Term
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Definition
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Term
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Definition
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Term
| Membrane lipids consist of ___% phospholipids (Lipid bilayer) which are phosphate head : ______and_____. Also Fatty acid tails : _______ and ______ |
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Definition
- 75%
- Polar and hydrophilic
- Nonpolar and hydrophobic
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Term
| Mebrane lipipids also consist of __% Gylcolipids which are lipds with ________groups on the _____ membrane surface. ___% Cholestorol which increases membrane ____and _____. |
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Definition
- 5%
- polar
- outer
- 20%
- Stability and Fluidity
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Term
Membrane Proteins :
- Integral - Transports proteins (carrier and channel), ___ or ____.
- Peripheral proteins are lossley attached to _____ protiens. Functions include Enzymes, motor proteins, cell to cell links, provides support on _____ surface and forms part of _____.
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Definition
- enzymes or receptors
- Integral
- Intracellular
- Glycocalyx
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Term
| Functions of Mebrane Proteins |
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Definition
- Transport
- Receptors for signal transduction
- Attachment to cytoskeleton and extracellular matrix
- Enzymatic activity
- Intercellular joining
- Cell to cell recognition
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Term
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Definition
- Tight Junctions - found in epithelial cells (prevents fluids and molecules forom moving between cells)
- Desmosome - help reduce tension in networking fibers
- Gap Junction - allows small molecules to pass from cell to cell
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Term
| Types of Membrane Transport |
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Definition
Passive - requires no ATP
Active - Requires ATP |
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Term
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Definition
- Simple diffusion- Nonpolar and hydrophobic (substances diffuse directly through)
- Carrier-mediated - changes shape for molecules
- Channel- mediated - Selective (leakage channel (open) and Gated channel (closed))
- Osmosis - Water diffuses through plasma membranes
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