SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Host
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Host Cell
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Mutation
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Vector
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Detailed explanation-1: -A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host. There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites. Entamoeba histolytica is a protozoan. A microscope is necessary to view this parasite.
Detailed explanation-2: -Parasites are plants or animals that live in or on another living thing, getting their food from it while it is still alive. The organisms that they live on are called hosts. Hosts never benefit from parasites. In fact, some parasites eventually cause their hosts to die.
Detailed explanation-3: -Plant parasites-Mistletoe, Cuscuta. Animal parasites-leech and lice. Note: The parasites have to overcome several obstacles so as to attach themselves to the host. For attachment, the proximity of the host and the parasite is essential.