Homework Help is Here – Start Your Trial Now!
Science
Biochemistry
1. Which of the following statements about water is incorrect? A. It is distributed between intracellular and extracellular compartments. B. It provides a medium for movement of molecules into and throughout cellular compartments. C. It responds to the input of heat by increasing the extent of hydrogen bonding and to cooling by decreasing the bonding between water molecules. D. To achieve equal osmolality on both sides of the membrane, water moves from a compartment with a low concentration of solutes to one with a higher concentration. 2. Which of the following statements about buffer is incorrect? A. Buffers consist of a weak acid and its conjugate base. B. Cause a solution to resist changes in pH when hydrogen ions or hydroxide ions are added. C. The closer the pH of the buffer to the pka of the weak acid, the lesser the buffer capacity. D. The greater the concentration of the weak acid and its conjugate base, the greater the buffer capacity. 3. Phosphate is one of the major buffer systems in the blood. Phosphate has the following pk|values for the dissociation of each of its three protons: pki = 2.1, pK2 = 7.1, and pki = 12.7. Its buffering ability is lowest at which of the following pH values? A. 7.0 B. 7.3 C. 12.6 D. 4.3

1. Which of the following statements about water is incorrect? A. It is distributed between intracellular and extracellular compartments. B. It provides a medium for movement of molecules into and throughout cellular compartments. C. It responds to the input of heat by increasing the extent of hydrogen bonding and to cooling by decreasing the bonding between water molecules. D. To achieve equal osmolality on both sides of the membrane, water moves from a compartment with a low concentration of solutes to one with a higher concentration. 2. Which of the following statements about buffer is incorrect? A. Buffers consist of a weak acid and its conjugate base. B. Cause a solution to resist changes in pH when hydrogen ions or hydroxide ions are added. C. The closer the pH of the buffer to the pka of the weak acid, the lesser the buffer capacity. D. The greater the concentration of the weak acid and its conjugate base, the greater the buffer capacity. 3. Phosphate is one of the major buffer systems in the blood. Phosphate has the following pk|values for the dissociation of each of its three protons: pki = 2.1, pK2 = 7.1, and pki = 12.7. Its buffering ability is lowest at which of the following pH values? A. 7.0 B. 7.3 C. 12.6 D. 4.3

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
1. Which of the following statements about water is incorrect? A. It is distributed between intracellular and extracellular compartments. B. It provides a medium for movement of molecules into and throughout cellular compartments. C. It responds to the input of heat by increasing the extent of hydrogen bonding and to cooling by decreasing the bonding between water molecules. D. To achieve equal osmolality on both sides of the membrane, water moves from a compartment with a low concentration of solutes to one with a higher concentration. 2. Which of the following statements about buffer is incorrect? A. Buffers consist of a weak acid and its conjugate base. B. Cause a solution to resist changes in pH when hydrogen ions or hydroxide ions are added. C. The closer the pH of the buffer to the pKa of the weak acid, the lesser the buffer capacity. D. The greater the concentration of the weak acid and its conjugate base, the greater the buffer capacity. 3. Phosphate is one of the major buffer systems in the blood. Phosphate has the following pk| values for the dissociation of each of its three protons: pK1 = 2.1, pK2 = 7.1, and pK = 12.7. Its buffering ability is lowest at which of the following pH values? A. 7.0 В. 7.3 C. 12.6 D. 4.3
Transcribed Image Text:1. Which of the following statements about water is incorrect? A. It is distributed between intracellular and extracellular compartments. B. It provides a medium for movement of molecules into and throughout cellular compartments. C. It responds to the input of heat by increasing the extent of hydrogen bonding and to cooling by decreasing the bonding between water molecules. D. To achieve equal osmolality on both sides of the membrane, water moves from a compartment with a low concentration of solutes to one with a higher concentration. 2. Which of the following statements about buffer is incorrect? A. Buffers consist of a weak acid and its conjugate base. B. Cause a solution to resist changes in pH when hydrogen ions or hydroxide ions are added. C. The closer the pH of the buffer to the pKa of the weak acid, the lesser the buffer capacity. D. The greater the concentration of the weak acid and its conjugate base, the greater the buffer capacity. 3. Phosphate is one of the major buffer systems in the blood. Phosphate has the following pk| values for the dissociation of each of its three protons: pK1 = 2.1, pK2 = 7.1, and pK = 12.7. Its buffering ability is lowest at which of the following pH values? A. 7.0 В. 7.3 C. 12.6 D. 4.3
Expert Solution
steps

Step by step

Solved in 5 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781319114671
Author:
Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:
W. H. Freeman
Lehninger Principles of Biochemistry
Lehninger Principles of Biochemistry
Biochemistry
ISBN:
9781464126116
Author:
David L. Nelson, Michael M. Cox
Publisher:
W. H. Freeman
Fundamentals of Biochemistry: Life at the Molecul…
Fundamentals of Biochemistry: Life at the Molecul…
Biochemistry
ISBN:
9781118918401
Author:
Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:
WILEY
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781305961135
Author:
Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:
Cengage Learning
Biochemistry
Biochemistry
Biochemistry
ISBN:
9781305577206
Author:
Reginald H. Garrett, Charles M. Grisham
Publisher:
Cengage Learning
Fundamentals of General, Organic, and Biological …
Fundamentals of General, Organic, and Biological …
Biochemistry
ISBN:
9780134015187
Author:
John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher:
PEARSON
SEE MORE TEXTBOOKS