Question

In a 50-gram living tissue, what would be the amount of water?
A. 15-25 gm
B. 25-30 gm
C. 35-45 gm
D. 70-90 gm

Answer 1

Hint: Water being the most abundant molecule in cells of the body composes a major proportion of cell mass. Interaction of water molecules with other elements of the cell plays an imperial role in the formation of biological structures including various cell organelles.

Complete answer: Water plays a crucial role in day to day functioning of the body. A person can survive for a few weeks without food, however, he may die without water within 3 days. Water is considered to be one of the most important nutrients that the body needs as it is essential for the following functions:
a. Removal of body wastes through urination, sweating and bowels.
b. Regulation of body temperature.
c. Protection of sensitive tissues and spine.
d. For lubrication of joints.
e. Formation of various biological structures in the cell such as cell membrane
f. Formation of other cell organelles.
In-plant tissues, water is an integral part of photosynthesis through which the plants synthesise their food. On average, water composes 70-90 per cent of the total cellular mass. Therefore, in 50 grams of living tissue, the amount of water would be 35-45 grams.
Thus, option C is the correct answer.

Note: Living cells are composed of soluble ions and water. The presence of salts and water makes it a good conductor of electricity. Some of the organs, such as the brain and kidneys, possess the highest percentage of water, while the bones and teeth have the lowest percentage.