Name the human tissues that contain about 85% water
Correct answer: B. Brain cells.
- A. Nerve cells.
- B. Brain cells.
- C. Bone cells.
- D. None of these.
Explanation
b) Brain cells: Brain cells, which include various types of neurons and glial cells, also contain a significant amount of water due to their high metabolic activity and the need for proper communication within the nervous system. However, they typically contain about 85% water.
This question appeared on the UHS MDCAT 2008 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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