Buyer: Victoria Proctor ()
Transaction ID: 4KS71350WY6468607
Biology Questions and Answers
Microbiology
www.biology-questions-and-answers.com
107
, Buyer: Victoria Proctor ()
Transaction ID: 4KS71350WY6468607
Biology Questions and Answers
living under high temperatures and low
Bacteria pH. The methanogen archaebacteria are
those that liberate methane gas (CH4),
they are found in swamps.
1. What are bacteria?
Bacteria are prokaryotic and unicellular 4. What are the main
beings. Bacteria have simple ecological roles of bacteria?
organization, they present an external
cell wall, plasma membrane, circular Bacteria are responsible for the
DNA within the cytoplasm and decomposition process at the end of
ribosomes for protein synthesis. Some food chains and food webs; in this
bacteria are encapsulated, i.e., they process, they also liberate utile gases
have a polysaccharide capsule outside and nutrients for other living beings.
the cell wall. Bacteria that live within the digestive
tube of ruminants and of some insects
digest cellulose for these animals. Some
bacteria also participate in the nitrogen
2. Are bacteria the only cycle, making fixation of nitrogen,
prokaryotic beings? nitrification and denitrification, almost
always in mutualist ecological
Prokaryotic beings are classified into interaction with plants. Bacteria present
two big groups: archaebacteria and within living beings, for example, some
bacteria (this last also known as that live inside the bowels, compete
eubacteria). with other pathogenic bacteria so
controlling the population of noxious
Compared to bacteria, archaebacteria agents. There are also bacteria that
have basic differences, like the chemical cause diseases and bacteria used in the
compositions of their plasma membrane production of medical drugs.
and cell wall and different enzymes
related to DNA and RNA metabolism. Excessive proliferation or mass
destruction of bacteria can impact entire
ecosystems. For example, when a river
is polluted by organic material the
3. What are halophile, population of aerobic bacteria increases
since the organic material is food for
thermoacidophile and them; the great number of bacteria
methanogen archaebacteria? then exhausts the oxygen dissolved in
water and other aerobic beings (like
There are three peculiar types of fishes) undergo mass death.
archaebacteria. The halophile
archaebacteria only survive in salt-rich
environments (even salinity of the sea is
not enough for them). Thermoacidophile
archaebacteria are characterized by
www.biology-questions-and-answers.com
109
Transaction ID: 4KS71350WY6468607
Biology Questions and Answers
Microbiology
www.biology-questions-and-answers.com
107
, Buyer: Victoria Proctor ()
Transaction ID: 4KS71350WY6468607
Biology Questions and Answers
living under high temperatures and low
Bacteria pH. The methanogen archaebacteria are
those that liberate methane gas (CH4),
they are found in swamps.
1. What are bacteria?
Bacteria are prokaryotic and unicellular 4. What are the main
beings. Bacteria have simple ecological roles of bacteria?
organization, they present an external
cell wall, plasma membrane, circular Bacteria are responsible for the
DNA within the cytoplasm and decomposition process at the end of
ribosomes for protein synthesis. Some food chains and food webs; in this
bacteria are encapsulated, i.e., they process, they also liberate utile gases
have a polysaccharide capsule outside and nutrients for other living beings.
the cell wall. Bacteria that live within the digestive
tube of ruminants and of some insects
digest cellulose for these animals. Some
bacteria also participate in the nitrogen
2. Are bacteria the only cycle, making fixation of nitrogen,
prokaryotic beings? nitrification and denitrification, almost
always in mutualist ecological
Prokaryotic beings are classified into interaction with plants. Bacteria present
two big groups: archaebacteria and within living beings, for example, some
bacteria (this last also known as that live inside the bowels, compete
eubacteria). with other pathogenic bacteria so
controlling the population of noxious
Compared to bacteria, archaebacteria agents. There are also bacteria that
have basic differences, like the chemical cause diseases and bacteria used in the
compositions of their plasma membrane production of medical drugs.
and cell wall and different enzymes
related to DNA and RNA metabolism. Excessive proliferation or mass
destruction of bacteria can impact entire
ecosystems. For example, when a river
is polluted by organic material the
3. What are halophile, population of aerobic bacteria increases
since the organic material is food for
thermoacidophile and them; the great number of bacteria
methanogen archaebacteria? then exhausts the oxygen dissolved in
water and other aerobic beings (like
There are three peculiar types of fishes) undergo mass death.
archaebacteria. The halophile
archaebacteria only survive in salt-rich
environments (even salinity of the sea is
not enough for them). Thermoacidophile
archaebacteria are characterized by
www.biology-questions-and-answers.com
109
