Question

Answer the following questions in brief.
1. Why is the oxidation of food important for our body?
2. What is respiration? Why is it essential for all living organisms?
3. How do different parts of the plants exchange gases with the atmosphere?
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Answer 1

Answer:

1. They are essential for life and involved in many important processes. In cellular respiration, glucose (a sugar from the food we eat) is oxidised by oxygen (from the air we breathe), producing carbon dioxide, water and energy to fuel our bodies. Household bleaches oxidise coloured stains into colourless molecules.
2. Respiration is the process of releasing energy from food and this takes place inside the cells of the body. Respiration is essential for life because it provides energy for carrying out all the life processes which are necessary to keep the organisms alive. All living organisms respire. Cells need and use the energy that is formed through this process to assist with life processes in order for organisms to survive and reproduce. Oxygen and carbon dioxide are the main gases involved in aerobic respiration.
3. Plants obtain the gases they need through their leaves. The gases diffuse into the intercellular spaces of the leaf through pores, which are normally on the underside of the leaf - stomata. ... From these spaces they will diffuse into the cells that require them.

Explanation:

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Answer 2

Answer:

1. They are essential for life and involved in many important processes. In cellular respiration, glucose (a sugar from the food we eat) is oxidised by oxygen (from the air we breathe), producing carbon dioxide, water and energy to fuel our bodies. Household bleaches oxidise coloured stains into colourless molecules.

2.All living organisms respire. Cells need and use the energy that is formed through this process to assist with life processes in order for organisms to survive and reproduce. Oxygen and carbon dioxide are the main gases involved in aerobic respiration.

3.Plants obtain the gases they need through their leaves. The gases diffuse into the intercellular spaces of the leaf through pores, which are normally on the underside of the leaf - stomata. ... From these spaces they will diffuse into the cells that require them.