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3. Phosphoric acid is tribasic, with pK,'s of 2.14, 6.86, and 12.4. The ionic form that predominates pH 6.86 is: А) НЗРО. B) H2PO4 C) HPO42- D) PO43- E) Two forms are present in equal amounts

3. Phosphoric acid is tribasic, with pK,'s of 2.14, 6.86, and 12.4. The ionic form that predominates pH 6.86 is: А) НЗРО. B) H2PO4 C) HPO42- D) PO43- E) Two forms are present in equal amounts

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
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2. You take milk out of the refrigerator and pour it on your cereal. Clumps of milk pour out of the carton onto your cereal. Which two biochemical concepts can explain why the milk formed clumps? A) Unfolding and oligomeric gel formation from mild heat (from someone leaving the milk out). B) Bacterial homeostasis and acid-base equilibrium using the Henderson-Hasselbalch equation. C) Bacterial acidification and protein aggregation at the isoelectric point. D) Hydrogen bonding between protein molecules and exponential bacterial growth. E) Sulfur production from thiotrophic bacteria and covalent disulfide bonding. 3. Phosphoric acid is tribasic, with pka's of 2.14, 6.86, and 12.4. The ionic form that predominates at pH 6.86 is: А) НЗРОД. В) Н2РО4 C) HPO,²- D) PO,3- E) Two forms are present in equal amounts
Transcribed Image Text:2. You take milk out of the refrigerator and pour it on your cereal. Clumps of milk pour out of the carton onto your cereal. Which two biochemical concepts can explain why the milk formed clumps? A) Unfolding and oligomeric gel formation from mild heat (from someone leaving the milk out). B) Bacterial homeostasis and acid-base equilibrium using the Henderson-Hasselbalch equation. C) Bacterial acidification and protein aggregation at the isoelectric point. D) Hydrogen bonding between protein molecules and exponential bacterial growth. E) Sulfur production from thiotrophic bacteria and covalent disulfide bonding. 3. Phosphoric acid is tribasic, with pka's of 2.14, 6.86, and 12.4. The ionic form that predominates at pH 6.86 is: А) НЗРОД. В) Н2РО4 C) HPO,²- D) PO,3- E) Two forms are present in equal amounts
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