Chapter 1: Life Processes

Q&A -Ask Doubts and Get Answers

Q
Life Processes

Question:

The breakdown of pyruvate to give carbon dioxide, water and energy takes place in

(a) cytoplasm.

(b) mitochondria.

(c) chloroplast.

(d) nucleus.

Answer:

The process by which energy is released from the digested food is called respiration. The food has stored energy, which is released during respiration. The site of respiration in cells is mitochondria. We breathe air that contains oxygen. This oxygen is utilized by mitochondria for the breakdown of glucose (oxidation of glucose) and energy is released. This energy is stored in mitochondria in the form of ATP and release when needed.

Therefore, the correct answer is (b) mitochondria.


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