1. A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.
2.an animal or plant on or in which a parasite or commensal organism lives
3.
an organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense
4.a virus that parasitizes a bacterium by infecting it and reproducing inside it.
5.a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease.
6.a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa, etc. to swim.
7.a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
8.a resistant asexual spore that develops inside some bacteria cells.
the inner layer of the membrane or wall of some spores and pollen grains.
9.A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.
10.an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
a device or installation that is used to break down a chemical substance.
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