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Osmoregulation - Bozemanbiology - Wyatt D
Osmoregulation - Bozemanbiology - Wyatt D
20
Biology
10th Grade
04/30/2012

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Term
Tonicity
Definition
Ability of a solution to cause a cell to gain or lose water
Term
Isotonic
Definition
Solution that has the same solute concentration as the cell
Term
hypotonic
Definition
solution with lower solute concentration than cell
Term
hypertonic
Definition
solution with a higher solute concentration than the cell
Term
osmoregulation
Definition
control of water balance
Term
Osmosis
Definition
diffusion of water across a semi-permeable membrane
Term
aquaporins
Definition
transport proteins that allow for the facilitaed diffusion of water
Term
facilitated diffusion
Definition
when a substance moves down its gradient with the help of a protein 
Term
osmoconformers
Definition
do not undergo a net gain or loss of water
Term
osmoregulators
Definition
animals that regulate water loss or gain
Term
urine
Definition
waste material produced by urinary system
Term
ADH
Definition
Hormone that signals kidney top reabsorb water
Term
Kidney
Definition
Place where osmoregulation occurs
Term
nephron
Definition
functional unit of kidney
Term
homeostasis 
Definition
maintenance of stable internal environment
Term
excretion
Definition
disposal of nitrogen containing products
Term
reabosorption
Definition
retention of water and valuable solutes by the body
Term
filtration
Definition
water and most other molecules forced into bowman's capsule
Term
ammonia
Definition
nitrogen containing waste product of fish
Term
urea
Definition
nitrogen contraining waste prodcut of humans
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