Question

2. Respiration is a chemical reaction.
(a) Where does it take place?
(b) What type of chemical reaction is it?
(c) Why is it important for living cells?​

Answer 1

Answer:

Respiration is a chemical change as new substances like carbon dioxide and water are formed. Also there is change in the mass as glucose is oxidised by oxygen and heat is released. This change is permanent. All these factors conclude that respiration is a chemical change.

Answer 2

Answer: As carbon dioxide and water are produced, respiration causes a chemical change. Additionally, the mass changes as oxygen oxidises the glucose and heat is generated. This modification is ongoing.

Explanation:

Here we will answer the following questions:
1.  Where does it take place?: All living organisms require the chemical process known as respiration to grow, repair, and survive. In the cells of plants, animals, and people, respiration takes place mostly inside mitochondria, which are found in the cytoplasm of a cell. Plants use the energy released during respiration to produce amino acids, whereas animals and humans use it to contract their muscles so they can move.

2. What type of chemical reaction is it? : The chemical process of respiration depicts that how organic substances release energy. Exergonic reactions convert the molecules into new molecules. Energy is released via the breakdown of adenosine triphosphate (ATP) into adenosine diphosphate (ADP) and phosphoric acid (Pi) (it is an exergonic reaction).
3. Why is it important for living cells?​:  
Exergonic reactions convert the molecules into new molecules.
Respiration provides energy to cells so it is very important.

There are two types of respiration:

• Aerobic process, which burns a lot of energy and requires oxygen

• Anaerobic processes, which don't need oxygen but produce a lot less energy per mole of starting material

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