Q1. Explain the roles of food in human life. Classify food sources with examples, and analyse how their properties affect processing and consumption.
- Food provides energy, supports growth/repair, and regulates body functions (physiological role).
- Food contributes to psychological satisfaction, cultural identity, and social bonding (socio-cultural role).
- Food sources classify as plant-based (cereals, fruits, vegetables) and animal-based (meat, dairy, eggs).
- Physical properties (water activity, texture, pH) dictate food preservation and processing methods.
Answer: Food plays a multifaceted and indispensable role in human life, extending beyond mere sustenance to encompass physiological, psychological, and socio-cultural dimensions. Physiologically, food provides essential energy for bodily functions, growth, and repair. It supplies macronutrients like carbohydrates, proteins, and fats for energy and structural components, alongside micronutrients such as vitamins and minerals crucial for metabolic processes and overall health. For instance, glucose from c...