Question

what is respiration?

Answer 1

Answer:

Explanation:

Respiration is a process of breathing, the inhale of oxygen & exhale of carbon dioxide.

* Respiration is of two types

(a) External respiration

(b) internal respiration

* External respiration:-

(a) The taking in of oxygen and giving out of carbon dioxide is called external respiration.

(b) it takes place in different ways in different organisms, some of them use lungs to breathe & some use gills and, skin

* Internal respiration:-

(a) inside cells, oxygen combines with glucose to produce energy. Carbon dioxide and water vapour are also produced in this process called internal respiration.

Glucose + oxygen -> carbon dioxide +

water vapour + Energy

Answer 2

• Respiration is the transport of oxygen from the outside environment to cells within tissues, as well as the removal of carbon dioxide in the opposite direction.
• The physiological definition of respiration differs from the biochemical definition, which describes a metabolic process in which an organism acquires energy (in the form of ATP and NADPH) by oxidising nutrients and releasing waste products.
• Although both cellular and physiologic respiration are essential for animal existence, the processes are distinct: cellular respiration happens in individual cells of the organism, whereas physiologic respiration includes metabolite diffusion and transport between the organism and the external environment.