vocabulary # 4

Host :is an organism tht provide food for a aparatise .

parasite: a parasite is and organism that live in r on a living thing and get food from it.

virus:is made of chromosomes-like prt carries the herediatary material.

Inferteron :is a chemical substance that infesteres with the way viruses reproduce.

vaccinnes : are substance made from weakened or dead viruses.

bacterias: are very small ,one cell monerans.

colony :is a groupof similar cell growing next to each other that dont depend of other.

capsule:some bacterias have a sticki outher layercalled a capsule.

asexsual reproduction:is the reproduce of a living thing from only one parent.

flagellum: some bacteria move with along whiplike thread calleda flagellum.

endospore :is a thick-walled structure that foms inside the cell ,enclosing all the nuclear material amd some cytoplasm.

saprophytes : are organism that use dead material.

decomposers: are living things that get their own foodfrom breaking down dead matter.

koch postulates: are steps for proving that disease is caused by certain microscopic organisn.

comunicate diseases.are ones that can be passed  from one organism to another.

antibiotics: are chemical substances that killor slow the growth of the bacteria.

biotechnology: is the use of living thing to solve practical problem.