Which of the following steps is NOT involved | vedclass

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(D) Respiration involves the following steps:$1$. Breathing or pulmonary ventilation by which atmospheric air is drawn in and $CO_2$ rich alveolar air

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Provision of nutrition and $O_2$ to all living cells of the body.

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(D) Respiration involves the following steps:$1$. Breathing or pulmonary ventilation by which atmospheric air is drawn in and $CO_2$ rich alveolar air is released out.$2$. Diffusion of gases ($O_2$ and $CO_2$) across alveolar membrane.$3$. Transport of gases by the blood.$4$. Diffusion of $O_2$ and $CO_2$ between blood and tissues.$5$. Utilization of $O_2$ by the cells for catabolic reactions and resultant release of $CO_2$ (cellular respiration).Option $D$ describes the provision of nutrition,which is a function of the circulatory and digestive systems,not a step in the process of respiration.

Which of the following steps is $NOT$ involved in the process of respiration?

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