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Anonymous users2024-02-13Paramecium is a lower protozoa, which can feed on bacteria and organic debris in the water into the gutter and then enter the paramecium for slow digestion and absorption. It is estimated that a paramecium can form about 60 food vacuoles per hour, and each food vacuole contains about 30 bacteria, so a paramecium can swallow about 43,200 bacteria per day, and it has a certain purification effect on sewage.
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Anonymous users2024-02-12Paramecium belongs to the most primitive and lowest protozoa in the animal kingdom It likes to live in rice fields, ditches or ponds with little flowing water with more organic matter, and feeds on bacteria and unicellular algae It is estimated that a paramecium can form about 60 food bubbles per hour, and each food bubble contains about 30 bacteria, so a paramecium can swallow about 43,200 bacteria per day, and it has a certain purification effect on sewage
Therefore, the answer is: because paramecium feeds on bacteria and unicellular algae, a paramecium can form about 60 food vacuoles per hour, and each food vacuole contains about 30 bacteria, so a paramecium can swallow about 43,200 bacteria per day, and it has a certain purification effect on sewage
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Anonymous users2024-02-11Paramecium belongs to the most primitive and lowest protozoa in the animal kingdom It likes to live in rice fields, ditches or ponds with little flowing water with more organic matter, and feeds on bacteria and single-celled algae It is estimated that a paramecium can form about 60 food vaplets per hour, and each food vacuole contains about 30 bacteria, so a paramecium can swallow about 43,200 bacteria per day, and it has a certain purification effect on sewage
Therefore, the answer is: because paramecium feeds on bacteria and single-celled algae, a paramecium can form about 60 food vacuoles per hour, and each food vacuole contains about 30 bacteria, so a paramecium can swallow about 43,200 bacteria per day, and it has a certain purification effect on sewage
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Anonymous users2024-02-10Paramecium is a protozoa and is often present in the activated sludge treatment of organic wastewater. First of all, paramecium can feed on some organic matter in sewage, degrade organic waste through self-assimilation, and purify sewage; Secondly, the presence of paramecium is conducive to the stability of the community structure of the microbial colloidal group in activated sludge, and increases the rate of microbial colloidal degradation of organic matter, thereby reducing the COD of sewage.
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Anonymous users2024-02-09Paramecium are single-celled organisms that can use organic matter in water for energy.
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Anonymous users2024-02-08Under normal circumstances, this is not the case, and the metabolites produced by paramecium themselves are actually more than in water.
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Anonymous users2024-02-07Paramecium belongs to the most primitive and lowest protozoa in the animal kingdom It likes to live in rice fields, ditches or ponds with little flowing water with more organic matter, and feeds on bacteria and single-celled algae It is estimated that a paramecium can form about 60 food vaplets per hour, and each food vacuole contains about 30 bacteria, so a paramecium can swallow about 43,200 bacteria per day, and it has a certain purification effect on sewage
Therefore, the answer is: because paramecium feeds on bacteria and single-celled algae, a paramecium can form about 60 food vacuoles per hour, and each food vacuole contains about 30 bacteria, so a paramecium can swallow about 43,200 bacteria per day, and it has a certain purification effect on sewage
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Anonymous users2024-02-06Answer] B Answer Analysis] Although paramecium is only composed of one cell, it can also complete life activities such as nutrition, respiration, excretion, movement, reproduction, and regulation. As shown in the figure, there is a small concave groove on one side of its body, called the "mouth groove", which is equivalent to the "mouth" of the paramecium.
When the dense cilia in the groove oscillate, the bacteria and organic debris in the water can be placed as food in the groove, and then enter the paramecium to form food bubbles for slow digestion and absorption. It is estimated that a paramecium can form about 60 food bubbles per hour, and each food bubble contains about 30 bacteria, so a paramecium can swallow about 43,000 bacteria per day, and it has a certain purification effect on sewage. Therefore, b
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