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Bacteria and Viruses

TermDefinition
Prokaryote Single celled organism that does NOT have a nucleus or membrane bound organelles. DNA free floats in cytoplasm. Example, bacteria
Pili Short hair like structures that help bacteria stick to things
Binary fission Asexual reproduction where a cell splits into 2 identical cells
Conjugation Hollow tube forms between 2 bacteria cells and genetic material moves between the 2 cells. Not reproduction, but it does increase genetic diversity
Endospore formation Thick wall forms inside of a bacteria cell. Forms when conditions become unfavorable. Can remain dormant for months or years.
3 shapes of bacteria cell Rod, round, and spiral
Flagella Whip-like tail that helps bacteria and other microbes move
Virus NON- living infectious particle composed of genetic material surrounded by a protein coat
Parasite Lives off and harms another living thing
Host Organism that supports a parasite
Are viruses treated with antibiotics? No, antibiotics treat bacterial diseases
Are viruses bigger or smaller than bacteria ? Much SMALLER
Saprophyte Bacteria that consume dead organic matter. The decomposers
Photoautotroph Bacteria that undergo photosynthesis
Chemoautotroph Bacteria that use chemicals to build glucose
Obligate aerobe Require oxygen
Obligate anaerobe Killed by oxygen
Facultative anaerobe Can live with or without oxygen
Herd immunity Herd immunity occurs when a large portion of a community (the herd) becomes immune to a disease. The spread of disease from person to person becomes unlikely when herd immunity is achieved
Created by: user-1654165
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