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The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic. It is carefully regulated by a number of homeostatic mechanisms, which exert their influence principally through the respiratory system and the urinary system in order to control the acid-base balance and respiration. What is the normal pH level of blood of a normal person?

A
4.5-4.6
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B
6.45-6.55
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C
7.35-7.45
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D
8.25-8.35
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Solution

The correct option is C 7.35-7.45

Option: (c)


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