Question

Why oxygen is called necessary evil for our body?

Answer 1

Answer:

Respiration or inhaling oxygen automatically leads to the generation of reactive oxygen species (ROS) in the human system. On one hand, ROS – the by-product of respiration - plays a key role in cellular signalling processes and is thus necessary for normal functioning of the human body. On the other hand, when the levels of ROS in the body are above threshold levels, they cause disruption in cell signalling and in turn have trickling down effects by causing damage to cells, tissues and organs.

Answer 2

Explanation:

Respiration or inhaling oxygen automatically leads to the generation of reactive oxygen species (ROS) in the human system. On one hand, ROS – the by-product of respiration - plays a key role in cellular signalling processes and is thus necessary for normal functioning of the human body. SO THEREFORE, OXYGEN IS CALLED NECESSARY EVIL FOR OUR BODY.

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