Campbell Biology in Focus (2nd Edition)
Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
bartleby

Concept explainers

bartleby

Videos

Question
Book Icon
Chapter 32, Problem 7TYU
Summary Introduction

Introduction:

The process of excretion is very much important for the removal of waste from the body. The nitrogenous waste can be ammonia, urea and other toxic waste. The metabolite ammonia is toxic and is formed by the urea cycle in the liver. The ammonia molecule is toxic and to remove it from the body the organism require huge amount of water.  Ammonia is the waste product of various fishes and aquatic organisms, and some terrestrial invertebrates and reptiles secrete uric acid. Urea is less toxic than ammonia.

Blurred answer
Students have asked these similar questions
What is the advantage of adding urea to feed in some cattle diets? Select one: a. It helps reduce CH3 production and hence the amount of eructation which contributes to global warming b. It helps stimulate kidney activity to help reduce blood toxins c. Urea helps control the growth of unwanted fungi and protists d. It is a cheap way to increase protein production by rumen symbionts
If a small amount of urea were added to an isoosmotic saline solution containing cells, what would be the result?a. The cells would shrink and remain that way.b. The cells would first shrink but then be restored to normal volume aftera brief period of time.c. The cells would swell and remain that way.d. The cells would first swell but then be restored to normal volume after a brief period of time.e. The urea would have no effect, even transiently.
Cholera affects millions of people around the world. It causes diarrhea, which can lead to dehydration and even death. Cholera toxin affects a chloride transporter that secretes chloride ion into the lumen of the small intestine. How does cholera toxin lead to dehydration? A. The toxin turns off the transporter, so the negatively charged chloride pushes water into the lumen. B. The toxin turns off the transporter, and water follows the ion due to osmosis. C. The toxin turns on the transporter and water is actively transported with the ion. D. The toxin turns off the transporter and water is no longer exchange for the chloride ion.
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Text book image
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Text book image
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Text book image
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license