Why is respiration considered an exothermic reaction ? Explain.

reduction of glucose takes place

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produces large amount of heat energy.

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oxidation of glucose takes place

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All of the above

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Solution

The correct options are
B produces large amount of heat energy.
C oxidation of glucose takes place
Energy is required to support life. The energy in our body is obtained from the food we eat. During digestion, large molecules of food are broken down into simpler substances such as glucose. Glucose combines with oxygen in the cells and provides energy. The special name of this combustion reaction is respiration. Since energy is released in the whole process, it is an exothermic process.
$C_{6} H_{12} O_{6} (a q) G l u c o s e + 6 O_{2} (g) O x y g e n \to 6 C O_{2} (g) C a r b o n d i o x i d e + 6 H_{2} O (l) W a t e r + E n e r g y$

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Similar questions

Consider the following chemical reactions which take place in different organisms/tissues under various conditions
(i) Glucose $R e s p i r a t i o n - ------ \to$ Ethanol + Carbon dioxide + Energy
(ii) Glucose $R e s p i r a t i o n - ------ \to$ Carbon dioxide + Water + Energy
(iii) Glucose $R e s p i r a t i o n - ------ \to$ Lactic acid + Energy

(a) Name one organism which respires according to equation (i)above.
(b) Name one organism which respires according to equation (ii) above.

(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f)Which of the above reactions produces the maximum amount of energy?

Q. Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i) Glucose

\overset{Respiration}{\to}

Ethanol + Carbon dioxide + Energy
(ii) Glucose

\overset{Respiration}{\to}

Carbon dioxide + Water + Energy
(iii) Glucose

\overset{Respiration}{\to}

Lactic acid + Energy
(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?

Q. Question 10

Why is respiration considered an exothermic reaction? Explain.

In the process of respiration, glucose combines with oxygen in the cells of our body and a large amount of energy is__i__. Hence, respiration is an__ii__ process.

The information in which alternative completes the given statements?

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