sábado, 9 de abril de 2011

Vocabulary N°4

1. Antibiotic: Are chemical substance that kill or slow the growth of bacteria.

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

3. Bacteria: Are very small,once celled monerams.


4.Biotechnology: Is the use of living thing to solve practical prblems.


5. Blue-green bacteria: Are small, once-celled monerams that contain chlorophyll and make their own food.


6. Capsule: Some bacteria have a sticky outer layer.


7. Colony: Is a group of similar cells growing next to each other.


8. communicable disease: Are ones that can be passed from one organims to another.


9.Descomposer: Are living thing that get breaking down or descomposing dead material.


10. Endospore: Is a thick-walled structure that forms inside the cell.


11. Fission: Is the process of one organism dividing into two organism.


12. : Some bacteria move with a long wiplike thread.


13. Host: If an organims that provides food for parasite.


14. Interferon: Is a chemical subtance the interferes with a virus reprduction.


15. Koch´s postulates. Are steps for proving that a deseaseis caused by a microscopic organims.


16.Parasite: Is an organims that live in or on other living thing and gets food from it.


17. Pasteurization: Is a process of heating milk to kill a harm full bacteria







18.Saprophytes: Are organims that use dead materials for food.


19. Vaccine: are substance made for dead viruses.


20.Virus: Is made of cromosome like past sorrounded by a protein coat.

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