What are the key roles of water in the human body, and how can one determine the water content of food?

Here are the answers to your Viva Questions:

1. The human body is composed of approximately 50-75% water, with an average of about 60%.

2. One function of water in the human body is to regulate body temperature through processes like sweating.

3. The statement 'Minerals help in the regulation of body temperature' is False. Water is the primary component involved in regulating body temperature.

4. The major component of blood in our body is plasma, which is largely composed of water.

5. To find the water content of a given food sample:

   • First, measure the initial weight of the fresh food sample.
   • Then, dry the food sample completely, for example, by heating it in an oven or exposing it to sunlight, until its weight no longer changes.
   • Measure the final dry weight of the sample.
   • The difference between the initial weight and the final dry weight will be the water content of the food sample.