Question

Cellular respiration takes place in
a. Lysosome
b. Chlorophyll
c. Mitochondria
d. Ribosomes

Answer 1

Hint: Respiration is an exergonic and catabolic-physio-chemical process that involves the exchange of environmental oxygen and body carbon dioxide through a liquid medium and the oxidation of glucose inside the mitochondria to produce energy, stored in the high energy bonds of ATP molecules.

Complete answer:
> Mitochondria:
Cell respiration is an enzymatically controlled chemical process in which the glucose is oxidized inside the mitochondria to release energy.
It is a stepwise reaction which means that energy is not released free into the cell or in a single step. It is released in a series of stepwise reactions controlled by enzymes to trap the chemical energy in the form of ATP i.e, adenosine triphosphate.

> Ribosomes:
The ribosomes are the smallest known electron microscopic, sub-microscopic, ribonucleoprotein particles that attach either on the rough endoplasmic reticulum or float freely in the cytoplasm. These are the sites of protein synthesis.

> Chlorophyll:
It is the major or chief photosynthetic found in the chloroplast of the cells of the leaves in plants. It gives green color to the leaves.

> Lysosome:
Lysosomes are spherical shaped membrane bound cell-organelles in animal cells that contain hydrolytic enzymes required for breaking down many biomolecules. These are involved in various cellular processes like secretion, plasma membrane repair, cell signaling, apoptosis, and energy metabolism.

Hence, the correct answer is option (C).

Note: The compounds that are oxidized during respiration are called respiratory substrates. Mainly carbohydrates are used by organisms as respiratory substrates to get energy but under some conditions in some organisms fats, proteins and organic acids are also used as respiratory substrates.