Vocabulary #4 Viruses and Monerans

1.Virus: a chromosome-like part surrounded by a protein coat.

2.host: an organism that provides food for a parasite.

3.parasite: an organism that lives in or on another living thing and get food from it.

4.interferon: a chemical substance that interferes with the way viruses reproduce.

5.vaccine: Substances made from weakened or dead viruses that protect you against certain deseases.

6.bacteria: Very small one-celled monerans.

7.colony: a group of similar cells growing next to each other that do not depend on each other.

8.capsule: a sticky outer layer produced by bacteria.

9.flagellum: a whiplike thread used for movement by bacteria.

10.fission: the process of one organism dividing into two organism.

11.asexual raproduction: the reproducing of a living thing from only one parent.

12.endospore: a thick-walled structure that forms inside a bacterial cell.

13.saprophyte:  organism that used dead materials for food.

14.decomposer: living things that get their food from breaking down dead matter into simple chemical.

15.koch´s postilates: stept for proving that a desease is caused by a certain microscopic organism.

16.communicable disease: those that can be passed from one organism to another.

17.antibiotic: chemical substance that kill or slow the growth of bacteria.

18.biotechnology: the use of living things to solve practical problems.

19.pasteurization: the process of heating milk to kill harmfull bacteria.

20.blue-green bacteria: samll one-celled morenans that contain chlorophyll and can make their own food.