Science Chapter 7 Flashcards
Vaccine:
prevents bacterial disease
Endospores:
thick walled structures that botulism makes
Pathogens:
any organisms that cause disease
Nitrogen-fixing bacteria:
bacteria that changes nitrogen that makes air usable for other plants
Saprophytes:
bacteria that helps balance nature
Antibiotics:
chemicals that send bacteria that limit the growth of other bacteria
Anaerobe:
any organism that is adapted to live without oygen
Aerobe:
a organism that needs oxygen (and uses) when breaking down food
Fission:
an asexual process that produces two new cells with genetic material identical to each other
Flagella:
whiplike tails that help bacteria move
Toxins:
poisonous substances produced by some pathogens
_____ are microscopic, living cells
bacteria
bacteria live almost __________, even in extreme conditions
everywhere
Most bacteria reproduce by…
fission
Bacteria can be producers that make their own food, ______ that break down dead organisms or parasites living in organisms
consumers
Most bacteria are _______, which some being anaerobes
aerobes
Bacteria are classified into two _____
kingdoms
what are the two kingdoms of bacteria?
eubacteria, and archaebacteria
cyanobacteria:
produce their own food, commonly blue-green; some may be black, yellow, or red
cyanobacteria produces _____
bloom
consumer eubacteria are grouped by…
cell wall thick/thinness
Where are archaebacteria oftely found?
in extreme conditions like salty or acidic, even hot environments
one anaerobic group produces ______ gas
methane
Most bacteria are helpful, which are necessary for human ______
health
some bacteria produce _________
antibiotics
saprophytes:
bacteria that use dead organisms as food, thus recycling for us
bioremediation:
how bacteria can be used to clean the environmental pollution
some bacteria break waste into ______ compounds, which they also eat pollutants
harmless
