The pH of human blood is:
Correct answer: B. 7.35 to 7.45
- A. 7.45 to 7.55
- B. 7.35 to 7.45
- C. 7.15 to 7.25
- D. 7.25 to 7.35
Explanation
Blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45. Usually the body maintains the pH of blood close to 7.40.
This question appeared on the NUMS 2021 paper, which you can sit online with every answer explained.
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About Biological Importance of Water
Water supports life through its polarity, hydrogen bonding and ability to dissolve ionic and polar substances. Its high specific heat, heat of vaporization, cohesion, adhesion and incompressibility help regulate temperature, transport materials and maintain structure, while hydrolysis and osmosis depend directly on water.
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