NEET BIOLOGY

Detailed explanation-1: -Respiration is the process by which living things obtain energy from food. Oxygen is required to convert the food that we eat into energy. This is acquired through breathing which is then used to obtain energy from the nutrients obtained from our food.

Detailed explanation-2: -Organisms acquire energy by two general methods: by light or by chemical oxidation. Productive organisms, called autotrophs, convert light or chemicals into energy-rich organic compounds beginning with energy-poor carbon dioxide (CO2). These autotrophs provide energy for the other organisms, the heterotrophs.

Detailed explanation-3: -Expert-Verified Answer When the living organisms intake food, the food gets oxidised with oxygen ( which enters our body through the process of breathing ) through a process called cellular respiration. After the food is oxidised, energy is released along with CO2 and waste, which then expelled from the body.