how much oxygen is important in our life? short note
Answers
Answer:
Oxygen accounts for 21% of the air present in our ecosystem. Oxygen is required by humans and animals for the process of respiration. Plants also lack oxygen during the night. In the daytime, trees and plants inhale carbon dioxide and take fresh oxygen.
Explanation:
#1. You need oxygen to turn food into energy
Oxygen plays several roles in the human body. One has to do with the transformation of the food we eat into energy. This process is known as cellular respiration. During this process, the mitochondria in your body’s cells use oxygen to help break down glucose (sugar) into a usable fuel source. This provides the energy you need to live.
#2. Your brain needs a lot of oxygen
While your brain only makes up 2% of your total body weight, it gets 20% of your body’s total oxygen consumption. Why? It needs a lot of energy, which means a lot of cellular respiration. To just survive, the brain needs around 0.1 calories per minute. It needs 1.5 calories per minute when you’re thinking hard. To create that energy, the brain needs a lot of oxygen. If you’re without oxygen for just five minutes, your brain cells start to die, which means severe brain damage.
#3. Oxygen plays an important role in your immune system
Your immune system guards your body against dangerous invaders (like viruses and bacteria). Oxygen fuels the cells of this system, keeping it strong and healthy. Breathing oxygen purified through something like an air sanitizer makes it easier for your immune system to use the oxygen. Low oxygen levels suppress parts of the immune system, but there’s evidence that suggests low oxygen might also activate other functions. This could be useful when investigating cancer therapies.