MICROBES
IN HUMAN
WELFARE
Class XII
, Syllabus
Use of microbes in:
(i) Household products: Lactobacillus (curd), Saccharomyces (bread), Cheese;
(ii)Industrial products: beverages (with and without distillation), antibiotics (Penicillin – di
and use); sources (microbes) and uses of organic acids, alcohols and enzymes (lipase, pe
protease, streptokinase) in industry, source (microbes) and applications of Cyclosporin-A
(iii)Sewage treatment – primary and secondary treatment;
(iv)Production of biogas (methanogens, biogas plant, composition of biogas and process of
production);
(v) Microbes as biocontrol agents (ladybird, dragonfly, Bacillus thuringiensis Trichoderma,
Nucleopolyhedrovirus (Baculovirus), and
(vi)Microbes as biofertilisers (Rhizobium, Azospirillum, Azotobacter, Mycorrhiza, Cyanobac
(vii)IPM, harmful effects of chemical pesticides.
, INTRODUCTION
• Microbes are the major components of biological systems
the Earth. These are microscopic, single-celled, tiny creat
that are too small to be seen with unaided eye. So, these
be seen only under a microscope.
• There are diverse forms of microbes which include protozo
bacteria, fungi, viruses, viroids and prions (proteinace
infectious agents).
Presentation title
, • Microbes are present in large variety in the environment present arou
i.e. in soil, air, water, inside our body and that of other animals and p
• They are even present in extreme conditions like thermal vents (ge
with temperature as high as 100°C, under thick layers of snow and in
acidic environments where no other life is possible.
• The microbes affect our daily life in considerable ways, i.e. they are
agents of most infectious diseases, they have been used by huma
many important processes in homes, industries, agriculture and
sewage treatment.
IN HUMAN
WELFARE
Class XII
, Syllabus
Use of microbes in:
(i) Household products: Lactobacillus (curd), Saccharomyces (bread), Cheese;
(ii)Industrial products: beverages (with and without distillation), antibiotics (Penicillin – di
and use); sources (microbes) and uses of organic acids, alcohols and enzymes (lipase, pe
protease, streptokinase) in industry, source (microbes) and applications of Cyclosporin-A
(iii)Sewage treatment – primary and secondary treatment;
(iv)Production of biogas (methanogens, biogas plant, composition of biogas and process of
production);
(v) Microbes as biocontrol agents (ladybird, dragonfly, Bacillus thuringiensis Trichoderma,
Nucleopolyhedrovirus (Baculovirus), and
(vi)Microbes as biofertilisers (Rhizobium, Azospirillum, Azotobacter, Mycorrhiza, Cyanobac
(vii)IPM, harmful effects of chemical pesticides.
, INTRODUCTION
• Microbes are the major components of biological systems
the Earth. These are microscopic, single-celled, tiny creat
that are too small to be seen with unaided eye. So, these
be seen only under a microscope.
• There are diverse forms of microbes which include protozo
bacteria, fungi, viruses, viroids and prions (proteinace
infectious agents).
Presentation title
, • Microbes are present in large variety in the environment present arou
i.e. in soil, air, water, inside our body and that of other animals and p
• They are even present in extreme conditions like thermal vents (ge
with temperature as high as 100°C, under thick layers of snow and in
acidic environments where no other life is possible.
• The microbes affect our daily life in considerable ways, i.e. they are
agents of most infectious diseases, they have been used by huma
many important processes in homes, industries, agriculture and
sewage treatment.
