What is the percentage of water present in our brain?
Correct answer: D. 73%
- A. 85%
- B. 95%
- C. 97%
- D. 73%
Explanation
The commonly quoted water content of the human brain is about 73%, reflecting the high water requirement of nervous tissue for metabolism and electrical signalling. Students may choose 85% or higher values because different sources give approximate values for different brain regions or tissues.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Biological Molecules
1,790 free Biological Molecules MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Biological Importance of Water questions
Osmosis is the movement of
If water has a high latent heat of vaporization, how could this property of water be helpful to plants and animals?
The amount of heat energy required to raise the temperature of one gram of water by 1°C :
Cuticular transpiration is _____________ of total transpiration?
When the concentration of the external medium is equal to the concentration of the internal medium of the cell, the situation is called:
What explains the effect on a red blood cell of being placed into pure water?