1. (I point)- Please order (lowest to the highest) the nitrogenous wastes Urea,
ID: 216738 • Letter: 1
Question
1. (I point)- Please order (lowest to the highest) the nitrogenous wastes Urea, Ammonia and Uric acid based on their requirement of water for secretion 2. (2 points)- In mammals, how is the concentration of urine achieved: by adding solutes to the urine, or removing water from the urine? 3. (I point)- Please define "Reabsorption" in the context of the excretory process. 4. (2 points)- If a human patient has a truncated (abnormally short) collecting duct, do you expect the urine be more concentrated or diluted? Why?Explanation / Answer
Answer:
1.
Lots of water is needed to remove ammonia.
Moderate amount of water is required for urea.
Comparatively small amount of water is required for uric acid.
Hence,lowest to highest(uric acid,uria,ammonia).
2.concentration of urine achieved by removing water from urine.
3.In excretory process reabsorption is a process in which nephron filter the soulte and water from fluid(tubular) and return it to the blood circulation.
4.main function of collecting duct is to concentrate urine hence truncated collecting duct may cause diluted urine.
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