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Unit 3e Vocab
Water Balance
| Term | Definition |
|---|---|
| osmoregulation | balance of water and solutes in our cells |
| osmosis | the movement of water from high to low concentration across the cell membrane |
| what happens to cells in salty environments | they shrink |
| what happens to cells in pure water | they swell and can eventually burst |
| what happens to cells at equilibrium | water moves in and out at equal rates |
| Kidney | organ in the excretory system that filters blood and produces urine |
| contents of urine | salt, water, urea |
| Solvent | what a solute is dissolved in |
| Solute | substance dissolved in a solvent |
| Concentration | amount of something per unit of area |
| Dehydration | not having enough water |
| Diffusion | movement of molecules from high to low concentration |
| Semi-permeable | some things can go through; others cannot |
| Nephron | the functional unit of the kidney |
| Antidiuretic Hormone (ADH) | tells the kidney to produce less urine |
| Types of molecules that can go through the semi-permeable membrane | small molecules like amino acids, fatty acids, and glucose (monosaccharides) |
| Types of molecules that can NOT go through the semi-permeable membrane | Large molecules like starch, proteins, and fats |
| metabolic waste | waste that is made in our cells like water, carbon dioxide, and urea |
Created by:
nldenissoff
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