Question

Define the following
a cellular respiration
b breathing
c pathogen​

Answer 1

Answer:

• Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
• the process of taking air into and expelling it from the lungs.
• a bacterium, virus, or other microorganism that can cause disease.

Explanation:

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Answer 2

Answer:

a. The process of breakdown of food in the cell with the release of energy is called cellular respiration.

b. Breathing is the process by which air rich in oxygen is taken inside the body of an organism and air rich in carbon dioxide is expelled from the body (with the help of breathing organs).

c. The disease causing microorganisms are called pathogens