Question

Answer in Detail
Why do living organisms need energy and where does this energy come from?
2 Diferentiate between the following:
Breathing and cellular respiration
(b) Inhalation and exhalation
Aerobe and anaerobe
(d) Respiration in animals and in plants
Answer Briefly​

Answer 1

Explanation:

1. living organisms need energy for their daily activities, and for them to be alive. this energy come from food, which is broken down into its simpler form in the process of digestion and energy is released.

2. (a)●breathing:-

• breathing involves the process of inhaling oxygen and exhaling carbon di oxide.

• breathing takes place in the lungs. also, involves the nose and mouth and pharynx.

• breathing is voluntary as well as involuntary physical process.

• there is no production of energy in this process.

• as it occurs outside the cells, it is called the extracellular process.

• no enzymes are used during the process.

• breathing occurs through respiratory organs, including the nose, lungs, etc.

● cellular respiration:-

• cellular respiration is the process of breaking down of glucose to produce energy, which is then used by cells to carry out the cellular function.

• respiration takes place in the cells.

• respiration is an involuntary chemical process.

• energy is produced and realesed in the form of ATP.

• as it occurs inside cells, it is called the intracellular process.

• a large number of enzymes are used during the process.

• respiration takes place in the cells and cell organelles, including mitochondria, etc..

(b)● inhalation:-

• inhalation is a vital physical process and is autonomous that occurs without concise or control.

• inhalation is an active process that requires energy.

● exhalation:-

• exhalation is also a vital physical process and is autonomous that occurs without concise or control.

• the main purpose of expiration is to get rid of carbon dioxide that is produced in the body by process of cellular respiration.