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24 Cards in this Set
- Front
- Back
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filtration
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movement of water and small substrates across a selective permeable membrane due to pressure gradiant. large particles (blood cells/proteins) will not pass through
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isotonic solution
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solution where is an equal concentration of dissolved solute particles in the cell
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kidneys
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where does filtration occur in the body?
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crenate
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what is the shriveled object called in hypertonic solution?
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what is the swelling called in hypotonic solutions?
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lyse
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lower concentration of solute particles than inside the cells
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hypotonic solution
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more particles inside the cell (swollen)
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hypotonic solution
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a solution with a higher concentration of dissolved solute particles than inside the cell
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hypertonic solution
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less particles in the cell (shrivelled)
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hypertonic solution
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diffusion of water molecules across a selectively permeable membrane, water always moves toward a higher solute concentration
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osmosis
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what two factors determine the rate of diffusion?
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temp & weight
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the movement of molecules down a concentration gradient (going from high to low concentration)
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diffusion
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what does glucose need to get through the cell membrane?
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hormone (insulin)
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why is the solute pump active?
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ATP (energy)
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what is the channel called to the right? the one with ATP? active or passive
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solute pump, active
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what is the middle channel called? active or passive?
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protein channel, passive
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what is the channel to the left? active or passive?
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carrier protein, passive
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major components of the plasma membrane?
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proteins, phospholipids, cholesterol
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does the hydrophilic head like water?
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yes
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does the hydrophobic tail like water?
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no
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whats the two stringy things on a phospholipid?
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hydrophobic tail (nonpolar)
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what is the circle-like structure on a phospholipid?
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hydrophilic head (polar)
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what is the structure called that looks like a man with two arms?
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phospholipid
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what might happen if someone with a chronic fenestration problem was untreated for high blood pressure?
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holes poke into your filtration system and get blood vessels in your urine
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