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Excretion in Protozoans
Excretion of metabolic wastes is dope almost exclusively by diffusion. All protozoans are ammonotelic i.e., the end product of their nitrogen metabolism is ammonia, which is readily diffused in the surrounding medium.
Figure: a) Parumecium with cytopharynx, food and contractile vacuoles and nuclei b) Enlarged section of a contractile vacuole in Paramecium which collects water and expels it outside, performing osmoregulatory functions
Three and Four Kingdom Classification The two-kingdom classification, while solving many of the problems of classification, failed to establish clear-cut distinction between p
digram or mammalian testis
You work with petunias and you have identified a single gene that causes their flowers to either be all pigmented (solid), or streaked with white. Depending on the genotype of this
Q. Explain about Non-Nutritive Sweeteners? Non-Nutritive Sweeteners: These are characterized by an intense sweet taste. They are needed in small quantities and do not make any
The reported occurrence of ICMAs is 1.2 per cent to 5 per cent of cases. Streptococci and S.aureus account for 50 per cent and 10 per cent of cases, respectively, and are seen with
Chemistry of Living Matter All living things including ourselves, are made of protoplasm. Protoplasm is essentiallya colloidal suspension of proteins in a w&ery solution. It is c
What gum conditions may result from a failure to remove plaque? Gingivitis (gum inflammation) and periodontal disease (infection of the socket) might be result from a failure t
What is fermentation? Name any two organic compounds formed in this process
explain anatomy of bacteria
How do normal flora protect against infection? a. Compete for space and nutrients with pathogens b. Release antimicrobial agents to kill pathogens c. Contribute to host health by p
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