Question

The process of respiration is:
A.An oxidation reaction which is endothermic
B.A reduction reaction which is exothermic
C.A combination reaction which is endothermic
D.An oxidation reaction which is exothermic

Answer 1

Respiration is a process in which cells of an organism obtain energy by combining oxygen and glucose. Resulting in respiration in the release carbon dioxide, water, and ATP. The chemical equation is ${C_6}{H_{12}}{O_6} + 6{O_2} \to 6C{O_2} + 6{H_2}O$ .This process is considered exothermic reaction which is an oxidation reaction.

Complete step by step answer:
When we eat food that food breaks down into simple compounds during digestion. For example, Potatoes, rice, which contains carbohydrates it breaks down to form glucose. Glucose reacts with oxygen to give energy that’s why it is an oxidation reaction. In this reaction energy is released, it is also an exothermic reaction. Glucose oxidizes and releases energy in the human body. Thus, this reaction is reacted with oxygen called oxidation reaction.
The chemical reaction of this process is given below:
${C_6}{H_{12}}{O_6} + 6{O_2} \to 6C{O_2} + 6{H_2}O$ +energy
So, the process of respiration is an oxidation reaction which is exothermic.
Hence, option (D) is the correct answer.

Note: Here we know that in the respiratory system energy is released which shows the reaction is an exothermic reaction. When we take food, it breaks down and forms glucose. Glucose reacts with oxygen which releases energy in the human body. During respiration, oxygen gets reduced by donating an electron to hydrogen. In this process glucose gets oxidized and produces carbon dioxide and water. In exothermic reaction, System releases energy from its surrounding, in the form of heat