Biology Questions and Answers
sulfur photosynthetic bacteria, use
hydrogen sulfide (H 2 S) instead of water.
- How are bacteria classified
according to their need for
oxygen?
According to their necessity of oxygen
bacteria(those that survive are classified without ointo anaxygen) anderobic (^)
aerobic (those that do not survive
without oxygen).
- What is meant when it is
said that a bacteria is an
obligate anaerobe?
Obligate beings that doanaerobes are those livin not survive in the g
presence of oxygen. For example, the
bacteriatetanus, is an obligate Clostridium tetani, anaerobe.agent of
In superficialuse hydrogen peroxide to expose wounds, it is commom to
anaerobic microorganisms to oxygen
and kill them.
- According to their
morphology how are bacteria
classified?
Bacteriapatterns. A b present dacterium can bifferent more classifiedphological
into coccus, bacillus, vibrion or
spirochete.
- What is the main
constituent of the cell wall of
bacteria?
The bacterial cell wall is madpeptidoglycans. e of - Which are the intracellular
organelles present in
bacteria?
Considering typical eukaryotic cell
organelles, hribosomes, esseterotroential for proteinphic bacteria have
synthesis. - What are plasmids? What
is the importance of plasmids
for the recombinant DNA
technology?
Plasmidsthat are accessories are circular f to the mainragments of DNA
bacterialfor genetic engineering because genes DNA. Plasmids are important (^)
from other organisms are inserted into
them to pfor example, roduce recombinant bmutant bacteria. Theseeings,
bacteria are made, for example, to
produce uindustrial scale.tile proteins for humans on an
- How do bacteria
reproduce?
Bacteria(scissiparity). reproduce by binary fission Some bacteria however (^)
present a kind of sexual reproduction
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