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The complex eukaryotic cell ushered in a whole new era for life on Earth, because these cells evolved into multicellular organisms. Evidence supports the idea that eukaryotic cells are actually the descendents of separate prokaryotic cells that joined together in a symbiotic union.
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continuous flow of energy and cyclic flow of matter in nature
Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. The bigger the concentration gradient, the faster the rate of diffusion is.
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what is meant by I can't understand this
I believe according to the process of cellular respiration the rate at which water and oxygen travel through the body can happen within seconds. I believe this process coincides with cellular respiration, Oxygen travels through the respiratory system into the lungs, from there the Oxygen is concentrated in the alveoli, little air sacks within the lungs. Oxygen will then travel through the blood vessels in the alveoli and oxygen will then move through the blood vessels into circulatory system and where the heart pumps the oxygen all throughout the body. Now there is an over excessive amount of oxygen in the capillary, oxygen will diffuse into the body cell, mitochondria, where there is a lack of oxygen, in the mitochondria, the process of cellular respiration will begin, carbon dioxide, Water and ATP (energy) are outputs of cellular respiration. The Carbon dioxide within the mitochondria will over excess its necessary amount whereas I believe me water will have the same affect, therefore both will be moved throughout the body by reversing the process of Moving oxygen throughout the body.
