NEET BIOLOGY

Detailed explanation-1: -Breathing is a mechanical Process. In breathing, an organism takes in oxygen from its environment and released carbon-dioxide. Breathing involves the transport of oxygen and carbon dioxide between the external environment and the body cells. This process is also called pulmonary respiration.

Detailed explanation-2: -Breathing is a chemical change as during breathing oxygen is taken inside and carbon dioxide and water are released.

Detailed explanation-3: -When you inhale (breathe in), air enters your lungs, and oxygen from that air moves to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out). This process, called gas exchange, is essential to life.

Detailed explanation-4: -Cellular respiration or internal respiration is a chemical process in which food molecules are broken down into simpler molecules within the cells and energy is produced.

Detailed explanation-5: -The types of chemical reactions called oxidation and reduction lie at the heart of respiration. They always occur together-one substance is oxidised as another is reduced. We often use the term redox reactions to describe this.