Which statement about the function of water in the human body is false?

• A. Water serves as a lubricant in joints and tissues.
• B. Water acts as a solvent, facilitating chemical reactions.
• C. Water provides a source of energy for cellular processes.
• D. Water helps regulate body temperature through sweating.

Answer: (C)

Verified step by step guidance

1. Understand the role of water in the human body by reviewing its functions: lubrication, solvent properties, temperature regulation, and energy provision.
2. Examine the statement 'Water serves as a lubricant in joints and tissues.' Water is indeed a lubricant, reducing friction in joints and tissues, which is a true statement.
3. Consider the statement 'Water acts as a solvent, facilitating chemical reactions.' Water's solvent properties allow it to dissolve various substances, enabling chemical reactions, which is a true statement.
4. Analyze the statement 'Water helps regulate body temperature through sweating.' Water is crucial for thermoregulation, as it evaporates from the skin during sweating, cooling the body, which is a true statement.
5. Evaluate the statement 'Water provides a source of energy for cellular processes.' Water does not provide energy; energy is derived from nutrients like carbohydrates, fats, and proteins. This statement is false.