Question

Whoever will answer fast will be marked brainliest

Answer 1

Answer:

option A is right

Explanation:

here is ur answer mark me as brainlist

Answer 2

Answer:

No, food is also required with oxygen

Explanation:

Respiration using oxygen to break down food molecules is called aerobic respiration. 'Aero' means air, which contains oxygen, leading to the name aerobic respiration. Glucose is the molecule normally used for respiration - it is the main respiratory substrate. Glucose is oxidized to release its energy, which is then stored in ATP molecules.

 

glucose + oxygen → carbon dioxide + water (+ ATP made)

Oxygen and Glucose together generate the energy after respiration.

Hope it will help you out :)