Please see questions in image Describe, stepwise, how you would prepare 0.5 L of a 0.15 M phosphate buffer, pH 12.5, usingK.PO. H.O (f.w. = 230.28) and KHPO.(f.w. = 174.18).[A¯]pH = pKa + log[HA]НРО. НРО.+ HpКа, — 2.12Н.РО. НРО. + HРКа, — 6.8НРО РО+ H-pKa: = 12.32What is the enzyme that catalyzes the reaction CO.+ H.O = H.CO. in human tissues, including blood?Since this reaction takes place in the absence of the enzyme, what is the physiological advantage inhaving such enzyme in the blood? [Hint: find what theturnover number is for this enzyme.]Thisenzymeis also found in chloroplasts. What do you think the role of this enzyme is in plants?

Answered: Describe, stepwise, how you would…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Please see questions in image

Describe, stepwise, how you would prepare 0.5 L of a 0.15 M phosphate buffer, pH 12.5, using
K.PO. H.O (f.w. = 230.28) and KHPO.(f.w. = 174.18).
[A¯]
pH = pKa + log[HA]
НРО. НРО.+ H
pКа, — 2.12
Н.РО. НРО. + H
РКа, — 6.8
НРО РО+ H-
pKa: = 12.32
What is the enzyme that catalyzes the reaction CO.+ H.O = H.CO. in human tissues, including blood?
Since this reaction takes place in the absence of the enzyme, what is the physiological advantage in
having such enzyme in the blood? [Hint: find what theturnover number is for this enzyme.]
This
enzyme
is also found in chloroplasts. What do you think the role of this enzyme is in plants?

Expert Solution

Step 1

The equilibrium between the weak acid and its conjugate base allows the solution to resist changes to pH when small amounts of strong acid or base are added. The buffer pH can be estimated using the Henderson-Hasselbalch equation, which is pH = pKa + log([A-]/[HA]).

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