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6 Cards in this Set
- Front
- Back
What type of cells contain ion channels?
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All types of cells, from bacterial to vertebrates
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plasma mmb fns
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highly selective filter
maintains unequal [ion] on either side allows nutrients to enter, wastes to exit |
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types of passive transport
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simple and facilitated diffusion
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e.g. of proteins used in facilitated diffusion?
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carrier, channel, transporter
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how does active transport move ions wrt gradient?
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moves ions AGAINST gradient
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3 strategies for coping with problem of osmotic balance?
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1) H2O impermeability
2) inelastic wall surrounding cell 3) making cell impermeable to selected EC solutes |