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Bio Ch. 44
Terms in this set (21)
What regulates solute concentrations and balances the gain and loss of water
What gets rid of nitrogenous metabolites and other waste products
What is Osmosis?
water moves from areas of low concentration to high concentration
number of non-diffusible solute particles in a solution
What is the movement of water if two solutions are isosmotic
the movement of water is equal in both directions
What is the movement of water in two solutions if they differ in osmolarity
the net flow of water is from the hypo-osmotic to the hyper osmotic solution
What are osmo-conformers?
isosmotic with their surroundings and do not regulate their osmolarity
What are osmoregualtors?
expend energy to control water uptake and loss in a hyper osmotic or hypo-osmotic environment
Most animals are stenohaline.. which means?
they cannot tolerate substantial changes in external osmolarity
Some animals are Euryhaline... which means?
they can survive large fluctuations in external osmolarity
most marine invertebrates are...
Most marine vertebrates and some invertebrates are...
marine bony fishes are ______ to sea water
When aquatic invertebrates in temporary ponds lose all their body water and survive in a dormant state
What are transport epithelia?
epithelial cells that are specialized for moving solutes in specific directions
What are the different forms that animals secrete nitrogenous waste
Ammonia, Urea, or Uric acid
Most toxic type of nitrogenous waste
Most aquatic animals and most bony fishes excrete this type of nitrogenous waste
Mammals, most amphibians, sharks, and some bony fishes excrete this type of nitrogenous waste
Many reptiles, insects, and land snails excrete this type of nitrogenous waste
What is the most energetically expensive type of nitrogenous waste to excrete
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