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Nutrition in an Amoeba occurs through a process called phagocytosis where the entire organism pretty much engulfs the food it plans on eating up. The mode of nutrition in amoeba is known as holozoic nutrition. It involves the ingestion, digestion and egestion of food material.
2 . In the presence of sufficient Oxygen, Pyruvate molecules are broken down into Water and Carbon dioxide and Energy is released. This process is called aerobic respiration. In the lack of oxygen, Pyruvate molecules are converted into lactic acid and energy is released.
3.The transport of gases during respiration, both oxygen and carbon dioxide are carried out by the blood cells. ... The transportation of gases is a very efficient process.
4.The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen. ... In most plants, water is supplied from the roots, with the leaves collecting carbon dioxide via the stomata and sunlight captured by the chloroplasts in the leaves.
5.Cellulose is large and complex substance, its digestion process is quite longer whereas in case of flesh eating animals like tiger, the digestion takes place easily and faster as meat is easy to digest. So carnivores have smaller intestine than the herbivores.