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41 Cards in this Set

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virus
made of chromosome-like part surrounded by a protein coat
host
organism that provides food for a parasite
parasite
organism that lives in or on another living thing and gets food from it
interferon
chemical substance that interferes with the way viruses reproduce
vaccines
substances made from weakened or dead viruses
bacteria
very small, one-celled monerans
bacteria lives where
water
air
soil
food
almost every object
capsule
sticky outer layer
flagellum move with
whiplike thread
fission
process of one organism dividing into two organisms

fission is asexual
asexual reproduction
reproducing of a living thing from only one parent
what do bacteria need to live
moisture
certain temperature
food
endospore
thick-walled structure that forms inside the cell, enclosing all the nuclear material and some cytoplasm.
human diseases caused by bacteria
strep throat
tuberculosis
certain kinds of pneumonia
gonorrhea
meningitis
anthrax
disease found in livestock
Koch's postulates
steps for proving a disease is caused by microscopic organism
Kock's postulates
1. organism must be present in living thing when disease occurs
2. organism must be taken from the host and grown in lab
3. when the organisms from the lab are injected in healthy host, cause disease
4. organism removed from new host, grown in lab
communicable diseases
can be passed from one organism to another
antibiotics
chemical substances that kill or slow the growth of bacteria
biotechnology
use of living things to solve practical problems.
blue-green bacteria
small, one-celled monerans that contain chlorophyll and can make their own food.
vaccine
substance made from weakened viruses or bacteria
biotechnology
use of living things to solve practical problems
pasteurization
process of heating milk to kill bacteria
communicable
disease passed from one organism to another
host
organism that provides food for a parasite
virus
chromosome-like part surrounded by protein coat
fission
one organism divides into two organisms
endospore
protective structure with a thick wall that some bacteria form
saprophyte
organism that used dead material for food
six traits of viruses
1 so small seen only with electron microscope
2 different shapes
3 made of chromosome-like parts with coated shell
4. not cells and have no cell parts
5. reproduce only in living things
6. act like parasites
viruses cause disease in
plants
animals
humans
rabies virus infects only the _______________________ system
nervous
viruses are always ________________________ than the cells they infect
smaller
Viruses reproduce __________________
of living cells
inside
bacteria
antibiotics
killed
vaccines
bacteria
prevented from starting
disinfectants
bacteria destroyed on objects that are not living
freezing bacteria
growth is slowed
pasteurization
heating kills harmful bacteria in milk
antiseptics
bacteria
kills on living things