Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 33.3, Problem 1MC
Summary Introduction
To determine:
The reason behind conversion of ammonia to urea or uric acid by land animals.
Concept introduction:
Animals produce two main categories of waste: 1) undigested food that pass through the digestive tract. 2)
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Ammonia, NH3, and ammonium ion, NH4+, are both soluble in water and could be easily excreted in the urine. Why does the body convert them to urea rather than excreting them directly?
How does ammonia get processed by the kidneys?
Why does the body convert NH4 + to urea for excretion?
Chapter 33 Solutions
Biology: Concepts and Investigations
Ch. 33.1 - Prob. 1MCCh. 33.1 - Prob. 2MCCh. 33.1 - Prob. 3MCCh. 33.2 - What is osmoregulation, and why is it important?Ch. 33.2 - Prob. 2MCCh. 33.2 - Prob. 3MCCh. 33.3 - Prob. 1MCCh. 33.3 - Prob. 2MCCh. 33.4 - Prob. 1MCCh. 33.4 - Prob. 2MC
Ch. 33.5 - What three processes occur in urine formation?Ch. 33.5 - Prob. 2MCCh. 33.5 - Describe the roles of antidiuretic hormone and...Ch. 33.6 - Prob. 1MCCh. 33.6 - Prob. 2MCCh. 33 - Prob. 1MCQCh. 33 - Prob. 2MCQCh. 33 - Prob. 3MCQCh. 33 - Prob. 4MCQCh. 33 - Prob. 5MCQCh. 33 - Which of the following components of glomerular...Ch. 33 - Prob. 7MCQCh. 33 - Prob. 1WIOCh. 33 - Prob. 2WIOCh. 33 - Prob. 3WIOCh. 33 - Prob. 4WIOCh. 33 - Prob. 5WIOCh. 33 - Prob. 6WIOCh. 33 - How does the kidney reduce the volume of urine to...Ch. 33 - Prob. 8WIOCh. 33 - Prob. 1PITCh. 33 - Prob. 2PITCh. 33 - Prob. 3PIT
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- Some animals living in a fluid medium excrete nitrogen asammonia. Land animals, which conserve water, excrete ureaand uric acid. Why does the excretion of these molecules aidin water conservation?arrow_forwardWhat are the mechanisms of ammonia neutralization?arrow_forwardProduction of any sort of nitrogenous waste other than ammonia costs energy. Name at least three distinctly different advantages an animal might gain by investing in production of urea or uric acid.arrow_forward
- African lungfish, which are often found in small stagnant poolsof fresh water, produce urea as a nitrogenous waste. What is theadvantage of this adaptation?(A) Urea takes less energy to synthesize than ammonia.(B) Small stagnant pools do not provide enough water to diluteammonia, which is toxic.(C) Urea forms an insoluble precipitate.(D) Urea makes lungfish tissue hypoosmotic to the pooarrow_forwardGive a Short note on transport and storage of ammonia ?arrow_forwardOn the basis of the type of nitrogenous end product, there are three modes of excretion in animals. These are ammonotelism, ureotelism, and uricotelism. Explain.arrow_forward
- What is the function of the buffer phosphate in the human body?arrow_forwardWhy would lipoid acid deficiency lead to metabolic acidosis in a human?arrow_forwardRapidly growing Burkholderia bacteria normally produce ammonia as a waste product. The accumulation of ammonia kills mutant bacteria that are unable to also produce oxalic acid. Explain how the normal Burkholderia cells are able to avoid death.arrow_forward
- explain the metabolic source of ammonia and how thebody disposes of it.arrow_forwardWhat differences between proteins are responsible for their differential solubility in ammonium sulfate?arrow_forwardWhich 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"arrow_forward
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