Biochemistry - Water, pH and Macromolecules - Discussion

Discussion Forum : Water, pH and Macromolecules - Section 1 (Q.No. 13)
13.
Which of the following acid/base pairs act as natural buffers in living systems?
H2CO3/HCO3-
H2PO4-/HPO42-
Histidine+/histidine
All of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Nitin Palsara said:   2 years ago
Thank you so much for explaining the answer @Mamta Joshi.

Dr. Mamta Joshi said:   8 years ago
The Buffer solution is an aqueous solution of weak acid and its conjugate base and its conjugate acid. These are mainly used to keep pH Constant.

Good example is blood. Arterial blood pH between 7.38 and 7.42. Buffering agent binds hydrogen ion and detect any change in pH Exist. Extracellular buffer are bicarbonate and ammonia and intracellular buffer are protein and phosphate.

Bicarbonate buffering show that carbon dioxide can be shifted through carbonic acid to hydrogen ion and bicarbonate.
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