Question

Respiration occurs in
A. All living cells both in light and dark
B. Non green cells only in light
C. Non green cells in light and dark
D. All non living cells in light only

Answer 1

Respiration is a series of chemical reactions that allow all living things to produce the energy they need to survive.
It is a biological process in which air is exchanged between the external environment and the species' tissues and cells. Inhalation of oxygen and emission of carbon dioxide gas occur during respiration. A metabolic process is defined as an entity that obtains energy by oxidising nutrients and thereby freeing wastes.

Complete answer:
Option A: In the presence of oxygen, most eukaryotes and prokaryotes do aerobic respiration. This is a mechanism that occurs in all living cells and is unaffected by light. Nutrients are catabolized into carbon dioxide and water during aerobic respiration.
So option A is correct.
Option B: All living cells, including leaves and roots, are capable of respiration. Because respiration does not require light energy, it can be done at any time of day or night.
So option B is not correct.
Option C: Respiration takes place in the mitochondria of plants, animals, and humans, which are found in the cytoplasm of the cell. Plants use the energy released during breathing to build amino acids, whereas animals and humans use it to contract their muscles and move.
So option C is not correct.
Option D: Most eukaryotes and prokaryotes do aerobic respiration in the presence of oxygen. This is an unaffected by light mechanism that happens in all live cells. During aerobic respiration, nutrients are catabolized into carbon dioxide and water.
So option D is not correct.

So option A is the correct answer.

Note:

PHOTOSYNTHESIS	RESPIRATION
This is a process that all green plants with chlorophyll pigments go through.	Plants, animals, birds, and other living things all go through this process.
Food is manufactured in a lab.	Food undergoes oxidation.
Is a process that is anabolic.	It's a catabolic reaction.
It's an endothermic reaction.	It's an exothermic reaction.
Only occurs throughout the day in the presence of sunlight.	Is a never-ending process that occurs throughout one's life.