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Bacteria ect. Notes

Flashcards about archea, bacteria, and viruses.

capsule an outer layer that protects the bacteria and helps it stick to things
flagella a whip-like tail or set of tails that helps the bacteria move
prokaryotic an organism that has no nucleus- the DNA floats around inside the cell
cocci -a round-shaped bacteria -single= coccus
bacilli -rod-shaped bacteria -single= bacillus
spirilla -sprial-shaped bacteria -single= spirillum
diplo pair
tetra group of four
strepto chain
staphlyo clump
filaments long chains of cyanobacteria
colonies large clumps of cyanobacteria
saprophytes organisms that use dead or decaying material as food and energy source- decomposers
nodules small bumps or growths that contain nitrogen-fixing bacteria and are found on the roots of some plants ex. peanuts
pathogens any organism that produces a disease
toxins poisons that pathogens produce which cause conditions such as food poisoning
virus a piece of hereditary material covered by a protein coat that infects and reproduces only inside a living cell
host cell a living cell that the virus takes over
latent -when a virus is inactive -when the virus is present but not actively reproducing
vaccine a weakened form of the virus which helps you produce antibodies to fight the virus without making you sick
binary fission -the process of one bacteria cell splitting into two -makes a copy of its DNA -takes about twenty minutes
aerobic organisms organisms that need oxygen to survive
anaerobic organisms organisms that can survive without oxygen
What does a T-4 virus look like? -protien coat -has DNA inside the protein coat
What makes a virus living or non-living? Living -reproduce Non-Living -don't grow -don't eat (get energy) -doesn't respond to its environment or adjust to their surroundings
Reproduction Steps for a virus 1. The virus attaches to a healthy cell 2. The DNA of the virus is put into the cell 3. The DNA of the virus takes control of the cell's functions 4. The virus directs cell to make new DNA and protein coats 5. Cell bursts open and viruses attack new c
Created by: dancer721