Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Question
Chapter 51.2, Problem 2R
Summary Introduction
To review:
The reason because of which urea is produced in sharks and rays instead of uric acid to raise osmotic concentration of extracellular fluids.
Introduction:
Urea and uric acid are the excretory products that are formed by protein
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Renal tubule cells in the kidney medulla are constantly exposed to high extracellular osmolirity. How do they maintain normal cell volume?
Renal tubule cells in the kidney medulla are constantly exposed to high extracellular osmolarity. How do they maintain normal cell volume?
Which molecules are responsible for the high osmolarity of the renal medulla in the mammalian kidney?
"Na+, Cl-, and K+"
"urea, uric acid, and Na+"
"Na+, Cl-, and urea"
"uric acid, urea, and amonia"
Chapter 51 Solutions
Life: The Science of Biology
Knowledge Booster
Similar questions
- Why is excretion important in order to achieve osmotic balance?arrow_forwardDrinking alcohol inhibits ADH secretion. What effect will drinking a beer have on the permeability of kidney tubules to sodium? To water?arrow_forwardExplain how the kidneys help to maintain the balance of acids and bases in extracellular fluid.arrow_forward
- The nephron reabsorbs glucose through a sodium / glucose transporter. What sort of transporter is it?arrow_forwardHow do angiotensin II, aldosterone, atrial natriuretic peptide, and antidiuretic hormone regulate the volume and osmolarity of body fluids?arrow_forwardIf the pH of the tubular fluid went down, how would its Na+concentration change?arrow_forward
- The kidneys of different species of amniotes differ widely in their ability to concentrate the urine. What determines the maximum osmolarity of the urine an animal's kidney can produce? Explain why. (not to long)arrow_forwardExplain the mechanism how furosemide affects kidney tubules. How does this affect K+ balance? How different is the mechanism of thiazide affect urine production? Describe the process of acid-base regulation in human body.arrow_forwardYou quickly drink 1l strong beer (6% alcohol) with low Na + content. What will happen to your a) urine volume and b) urine osmolarity in relation to your blood? NOTE! Also explain the physiological mechanisms behind these changes.arrow_forward
- State the implication of a high value of NPN in blood and urine. What does the amount of urea, ammonia, and creatinine in the urine tell us about renal function? Which food substances can lead to an increased value of NPN in the blood?arrow_forwardThe following substances are normal constituents in urine. Determine their metabolic origins in the human body. Urea - Creatinine Indican Uric acid Why is analysis of urine important in the diagnosis of diseases?arrow_forwardThe immediate effect of ADH on the renal tubules of frogs and mice is the same, yet when ADH is secreted, frogs produce urine that is approximately isosmotic to their blood plasma, whereas mice produce urine far more concentrated than their blood plasma. Explain this difference in terms of the factors affecting osmosis in the kidneys of frogs and mice.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College