Biology Questions and Answers
- What are examples of
human diseases caused by
bacteria?
Some human diseases causebacteria are tuberculosis, pertussis,d by (^)
diphtheria, bgonorrhea, syphilis, buacterial meningitis,bonic pla (^) gue,
leptospirosis, cholera, typhoid fever,
Hansen’s diseasanthrax. e, trachoma, tetanus,
- What are some industrial
processes that use bacteria?
Bacteriaways. There are vaccines mad are used by industry in varioe of us
attenuated pathogenic bacteria or antigens present in bacteria. One of theof (^)
most anciefermentation ont uses of milk to pf bacteriaroduce y is theogurt, (^)
cheese and curd (even before the
knowledge of the existence these microorganisms were alreadyof bacteria
used in the making of those products).
Some methods oinvolve bacteria. The recombinaf antibiotic productionnt DNA (^)
technology (genetic engineering) allows
the industrialcommercialization production of human proteins,and (^)
like insulin for diabetics, synthesized by
mutant bacteria. Somproduce fuel, like methane gas.e bacteria can
- What are some mechanisms
by which pathogenic bacteria
cause diseases? Why is this
knowledge important?
Pathogenic bacteriaknown as virulence factors that he have characteristicslp
them to parasite their host. Somebacteriastructures that attach th have fimbriae, cilium-likee bacterial cell (^)
to the host tissue. There are bacteria
specialized iOther bacteria secretn intracellular pe toxins, molarasitism.ecules (^)
that cause disease; in some cases, the
bacterialcontamination population g by toxins.rowth causes Generally, food
bacterial disease is caused by bacterial
population gdestruction orowth with f tissues or invasion aby bacterialnd (^)
toxins that contaminate the organism.
- In which environments do
bacteria live?
Bacteria can be found in various
environments throughout the planet.There are bacteria in the air, in fresh (^)
water, intermediate deon the surface, pth and on the bottomin the (^)
of the sea, in soils, in our skin and
practicallythrough which air circulates in all terrestrial environm freely. ents
Some bacteria can be found in volcanic
craters utemperatunder extremely highres.
- How are bacteria classified
according to the production of
organic material for the
energetic metabolism?
Most bacteria are not produce their own food. There areheterotroph, they do
also autotroph bacteria: chemosynthetic
bacteria or photosynthetic bacteria.
Some photosynthetic bacteria, like
cyanobacteria,plants do, using water. Ot make photosynthesishers, the like
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