Viruses and Monerans

Virus: it is made of chromosome-like part surrounded by a protein coat.

Host: is an organism that provides food for a parasite. Parasite: is an organism that lives in or on another living thing and gets food from it.

Interferon: is a chemical substance that interferes with the way viruses reproduce.

Vaccines: substances made from weakened or dead viruses.

Bacteria: very small, one-celled monerans.

Colony: a group of similar cells growing next to each other that do not dependon each other.

Capsule: bacteria`s sticky outer layer.

Flagellum: long whiplike thread.

Fission: the process of one organism dividing into two organisms.

Asexual reproduction: the reproducing of a living thing from only one parent.

Endospore: is a thick-walled structure that forms inside the cell, enclosing the  all the nuclear material and some cytoplasm.

Saprophytes: are organism that use dead materials for food.

Decomposers: living things that get their food from breaking down dead matter into simpler chemicals.

Koch`s postulate: are steps for proving that a disease is caused by a certain microscopic organism.

 

Communicable diseases: diseases that can be passed form one organism into another.

Antibiotic: are chemical substances that kill or slow the grouth of bacteria.

Biotechnology: the use of living things to solve practical problems.

Pasteurization: the process of boiling milk to kill harmfull bacteria.

Blue-green bacteria: small, one-celled monerans that contain chlorophyll and can make their own food