Bio 117 WVU Exam 3|63 Questions with 100% Correct Answers | Verified | Updated 2024

Osmoregulation - ️️The control of water balance and solute composition Nitrogenous waste - ️️Formed by the breakdown of proteins and nuclei acids, toxic ammonia is produced Directly excreted - ️️Toxic, needs lots of water, most invertebrates and fresh water fish Waste converted to urea - ️️Low toxicity, requires ATP, turtles mammals marine fish amphibians Waste converted to Uric acid - ️️Relatively nontoxic, largely insoluble in water, birds Four nephron parts - ️️Renal corpuscle, proximal tube, loop of henle, distal tube (All parts located in renal cortex except for the loop of henle) How do kidneys filter - ️️Fluids moved into bowmans capsule, going down the defending limb we gain water and keep salt, going up the ascending limb we keep water and lose salt through osmosis, active transport happens in the thick part of the ascending limb Antidiuretic hormone - ️️Causes a more concentrated urine to form Diabetes insipidus hormone - ️️Causes very dilute urine to form Diffusion of oxygen - ️️Gas exchange over respiratory surfaces happens entirely by diffusion. The diffusion requires surface area, thin gas permeable surface, and water