Answer:
Oxygen + Sugar → Energy + Carbon dioxide + Water
Explanation:
When oxygen molecules combine with a sugar molecule, energy is produced along with carbon dioxide and water.This energy is used in carrying out other cellular processes.
The correct word formula for cellular respiration is A).
[tex]oxygen \ + sugar \rightarrow \ (energy) \ + \ carbon \ dioxide \ + \ water[/tex]
Cellular respiration is the process of breaking down glucose to release energy. The glucose comes from food molecules and is oxidized or broken down by oxygen. The products of cellular respiration are carbon dioxide, water, and energy. The carbon dioxide is breathed out into the the atmosphere and the energy is mostly used by cells for different functions such as cellular division, protein synthesis, muscle contraction and movement, and transport of substances. Some energy is released as heat which is used to regulate the temperature of the body of warm-blooded organisms like mammals and birds.
The process of cellular respiration happens in the organelle called the mitochondria. The process converts chemical energy stored in food into other forms of energy including heat. Cellular respiration occurs in a series of steps and gradually releases the energy of glucose in small quantities. The chemical equation represented above is just the summary of the entire process. It is also called aerobic respiration.
Respiration can still occur when there is insufficient oxygen such as during exercise when the muscles are overworked. This is called anaerobic respiration. During this process, glucose is not completely broken down to carbon dioxide and water but lactic acid forms instead. This process releases some energy but not as much as aerobic respiration.
Keywords: cellular respiration, aerobic respiration
