Growing wheat and converting it into bread requires energy I

Growing wheat and converting it into bread requires energy. In the process, the wheat absorbs the sunlight and through photosynthesis converts carbon dioxide and water into carbohydrates. The plants are harvested and the wheat is ground into flour. The flour is transported to a bakery where it is baked into bread. The bread is sold and then consumed by the customer. After eating a piece of bread, the customer goes for a walk. What are the different forms of energy, and how is the energy converted from one form to another in these processes?

Solution

Ans:

1. Growing wheats: PLants are photo autotrophs means by utilising light energy (sun light) and atmospheric co2 they can synthesis their own food by the process called PHOTOSYNTHESIS. this physico chemical process.

Here light energy means physical energy converted into chemical energy (Carbohydrates by c3 pathway, because wheat is C3 plant).

By using other form of physical energies convert the wheat into bread in bakery like heat energy.

Once preson consumes bread, it enter into stomuch and start digestion. convertion of complex carbohydrates molecules into simple molecules. like Glucose. The fate of glucose is, it under goes biochemical processes like glycolysis/ kreb cycle/ electron transprot chain and form the high energy molecules like ATPs and NaDH+H⁺.

Once person start walking this chemical energy (ATP and NADH+H⁺⁾ was utilized and convert in the form of physical function.

Conclusion: finally physical energy converted into chemical energy and chemical energy was utilised for physical processses. It is a chain / cyclic process.