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5 Cards in this Set
- Front
- Back
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What is the difference between poikilothermic and homeothermic organisms? What are examples of both? |
Poik: body temperature varies with environment temperature--> jellyfish Homeo: body temperature remains constant despite environmental flucuations--> birds and mammals |
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What is the difference between ectothermic and endothermic organisms? What are examples of both? |
Ectotherms: depend on environment for heat energy-->lizards and snakes Endotherms: rely on metabolic activity for heat energy--> mammals |
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How do freshwater fish maintain osmoregulation? Saltwater? |
1. gain water through osmosis, and lose it through excretion 2. gain water through drinking, lose water through osmosis |
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What are the components of nephrons in order of the process? |
1. Bowman's capsule 2. loop of Henle 3. Collecting duct |
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How is urine filtrated in the kidneys? |
Nutrients, salt, and water are absorbed from proximal and distal tubules. Secretion of H+ and reabsorption of HCO3- regulate pH. |
