Virus: a chromosome- like part surrounded by a protein coat.
Host: an organism that provides food for a parasite.
Parasite: an organism that lives in or on another living thing and gets food from it.
Interferon: a chemical substance that interferes with the way viruses reproduce.
Vaccine: a substance made from weakened or dead viruses that protects you against certain diseases.
Bacteria: very small, one-celled monerans
Colony: a group of similar cells growing next to each other that do not depend on each other.
Capsule: a sticky outer layer produced by bacteria.
Flagellum: a whiplike thread use for movement by bacteria.![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_sc4n4DeBGRqTa-xPgDSA4cewSQVPwr4eRaOBI5Ri3rGQUkN0vSDKg16aWJM0b4cgvGi_yEHL16r_Yrn3H4-VMAnc2ScPC2oODZwk90ffIKRxVh0iSsLA1URPhPbuZTz-uI4fg6FhT8WcpTRit3pYD6VyAjgaZjPkqddgVJrgM=s0-d)
Fission: the process of one organism dividing into two organisms.
Asexual reproduction: the reproducin of a living thing from only one parent.
Endospore: a thick-walled structure that forms inside a bacterial cell.
Saprophyte: organisms that use dead materials for food.
Descomposer: living things that get their food from breaking down dead matter into simpler chemicals.
Koch´s postulates: steps for proving that a disease is caused by a certain microscopic organisms.
Communicable disease: those that can be passed from one organisms to another.
Antibiotic: a chemical substance that kill or slow the growth of bacteria. ![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_ul8U-71iASW3hVGydCBrmjteD9TZctBdGyt367Ng4g6a3OtZ6UarUxgpNmfyauEmLG71LGv88SzvLh8zf8Mgj4v1qSp8dbvgUmr1VRJ7Nx_Bgkp5ktaY9gKrO7-rtG8bUV9mxh2SbodQ1rBafeSfqhq8GgOQIjrLrxumOs5Q=s0-d)
Biotechnology: The use of living thing to solve pratical problems. ![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_uMqW3gKmqQZEi_rku0urGloB9yqiMzOmdxzN5R5wldxAPYElEzwRh4Jynn7MsrH5HV1Z8EErgtKL3ix3_yRObgK45tUpXTo8RjZuqClHeepWNRHtfAVjw6gWENXyXnor1JN7g-UbWonAdcQ6M_ATcAhnwufHhzqe2pWLO7O_0=s0-d)
Pasteurization: the process of heating milk to kill harmful bacteria.![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_t1wrZnztcmOK6E5nIhIV_Sxf-hgxp2vsDn3z7U1DbQeZ9WIXgtFXw3HGCHUqwIECcUxSNonxGr5OYLztqlxkcc7bl_PV-CsOm-TC-LfJ__4V-kMGqXmL7vinxCtrAdYBW_YPZ-8K52zTVbtLhTXR8c697KuYx8Q9owc5kVVEA=s0-d)
Blue-green bacteria: small, one-celled monerans that contain chlorophyll and can make their own food.