Human Biology Lab
Human Biology Lab
15th Edition
ISBN: 9781308566672
Author: McGraw-Hill Education
Publisher: Mcgraw-Hill
bartleby

Videos

Question
Book Icon
Chapter 11, Problem 1A
Summary Introduction

Introduction:

The kidney gland filters the ions, metabolites and excretes the metabolic nitrogenous wastes from the body. The acid base balance is balanced by the exchange of the ions in the interstitial fluid and tubules of the nephrons in the kidney. The movement of hydrogen ions and bicarbonate ions balances the pH in the blood and nephrons of the kidney.

Expert Solution & Answer
Check Mark

Answer to Problem 1A

Correct answer:

The acid-base balance in the kidney is maintained by the exchange of hydrogen and bicarbonate ions in the nephrons of the kidney. The movement of ions takes place across the ion channel receptors called as aquaporins in the membrane. Therefore, option (c) is correct.

Explanation of Solution

Reason for the correct statement:

The excretion of the metabolite urea is not related to the maintenance of acid-base balance in the kidney. The excretion of nitrogenous wastes like urea takes place as a result of the byproduct formed in the urea cycle. The acidHuman Biology Lab, Chapter 11, Problem 1A , additional homework tip  1base balance is maintained by the movement of hydrogen and bicarbonate ions in the tubules and interstitial fluid.

Option (c) is given as “maintains the acid-base balanceHuman Biology Lab, Chapter 11, Problem 1A , additional homework tip  2rids the body of uric acid”.

As “the acid-base balance is regulated by the movement of the bicarbonate and hydrogen ions across the membrane of the nephrons and peritubular capillaries”, it is the right answer.

Hence, option (c) is correct.

Reasons for the incorrect statements:

Option (a) is given as “excretes metabolic wastesHuman Biology Lab, Chapter 11, Problem 1A , additional homework tip  3rids the body of urea”.
The metabolic wastes are excreted from the kidney through the urine like urea. As the mentioned statement is correct, so it is a wrong answer.

Option (b) is given as “maintains the waterHuman Biology Lab, Chapter 11, Problem 1A , additional homework tip  4salt balance-helps regulate blood pressure”.
The water salt balance is maintained by the secretion of hormone aldosterone from adrenal gland and anti-diuretic hormone from posterior pituitary gland. The secretion of aldosterone maintains the concentration gradient of ions in the tubules. The secretion of anti-diuretic hormone causes the reabsorption of the water in the distal convoluted tubules and collecting duct. As the mentioned statement is correct, so it is a wrong answer.

Option (d) is given as “secretes hormonesHuman Biology Lab, Chapter 11, Problem 1A , additional homework tip  5secretes erythropoietin”.
The synthesis of t red blood cells is caused by the secretion of the erythropoietin hormone. As the mentioned statement is correct, so it is a wrong answer.

Hence, options (a), (b) and (d) are incorrect.

Conclusion

The acid-base balance is maintained in the kidney by the movement of hydrogen and bicarbonate ions in the nephrons of the kidney. This balance is not related to the excretion of the urea from the body. The excretion of nitrogenous wastes takes place in the urine as a result of the byproduct of the urea cycle.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Alleles at the P locus control seed color. Plants which are pp have white seeds, white flowers and no pigment in vegetative parts. Plants which are P_ have black seeds, purple flowers and may have varying degrees of pigment on stems and leaves. Seed color can be assessed, visually, based on if the seed is white or not white A gene for mold resistance has been reported and we want to determine its inheritance and whether it is linked to P. For the purposes of this exercise, we will assume that resistance is controlled by a single locus M, and M_ plants are resistant and mm plants are susceptible.  Resistance can be measured, under greenhouse conditions, 2 weeks after planting, by injecting each seedling with a spore suspension. After two weeks, the seedlings can be rated as resistant or susceptible, based on whether or not tissue is actively sporulating. For this exercise we will use seed and data from the F10 generation of a recombinant inbred population produced using single seed…
Linkage in common bean Alleles at the P locus control seed color. Plants which are pp have white seeds, white flowers and no pigment in vegetative parts. Plants which are P_ have black seeds, purple flowers and may have varying degrees of pigment on stems and leaves. Seed color can be assessed, visually, based on if the seed is white or not white A gene for mold resistance has been reported and we want to determine its inheritance and whether it is linked to P. For the purposes of this exercise, we will assume that resistance is controlled by a single locus M, and M_ plants are resistant and mm plants are susceptible.  Resistance can be measured, under greenhouse conditions, 2 weeks after planting, by injecting each seedling with a spore suspension. After two weeks, the seedlings can be rated as resistant or susceptible, based on whether or not tissue is actively sporulating. For this exercise we will use seed and data from the F10 generation of a recombinant inbred population…
Alleles at the P locus control seed color. Plants which are pp have white seeds, white flowers and no pigment in vegetative parts. Plants which are P_ have black seeds, purple flowers and may have varying degrees of pigment on stems and leaves. Seed color can be assessed, visually, based on if the seed is white or not white A gene for mold resistance has been reported and we want to determine its inheritance and whether it is linked to P. For the purposes of this exercise, we will assume that resistance is controlled by a single locus M, and M_ plants are resistant and mm plants are susceptible.  Resistance can be measured, under greenhouse conditions, 2 weeks after planting, by injecting each seedling with a spore suspension. After two weeks, the seedlings can be rated as resistant or susceptible, based on whether or not tissue is actively sporulating. For this exercise we will use seed and data from the F10 generation of a recombinant inbred population produced using single seed…
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
Alcohol | Health | topic | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=y2Rgxm7Vvi8;License: Standard Youtube License