Microbes in Human Welfare PPT Biology Class 12

 Page 1


MICROBES IN HUMAN
WELFARE
Page 2


MICROBES IN HUMAN
WELFARE
INTRODUCTION
Microbes are present everywhere – in soil, water, air,
inside our bodies and that of other animals and plants
They are present even at sites such as deep inside the
geysers (thermal vents) where the temperature may be
as high as 100 degree Celsius, deep in the soil, under
the layers of snow several metres thick, and in highly
acidic environments
Microbes are diverse–protozoa, bacteria, fungi and
microscopic animal and plant viruses, viroids and
also prions that are proteinacious infectious agents
Page 3


MICROBES IN HUMAN
WELFARE
INTRODUCTION
Microbes are present everywhere – in soil, water, air,
inside our bodies and that of other animals and plants
They are present even at sites such as deep inside the
geysers (thermal vents) where the temperature may be
as high as 100 degree Celsius, deep in the soil, under
the layers of snow several metres thick, and in highly
acidic environments
Microbes are diverse–protozoa, bacteria, fungi and
microscopic animal and plant viruses, viroids and
also prions that are proteinacious infectious agents
Microbes like bacteria and many fungi can be grown on
nutritive media to form colonies , that can be seen with the
naked eyes which are useful in studies on micro-
organisms.
several microbes are useful to man in diverse ways - 
MICROBES IN HOUSEHOLD PRODUCTS
MICROBES IN INDUSTRIAL PRODUCTS
MICROBES IN SEWAGE TREATMENT
MICROBES IN PRODUCTION OF BIOGAS
MICROBES AS BIOCONTROL AGENTS
MICROBES AS BIOFERTILISERS
Page 4


MICROBES IN HUMAN
WELFARE
INTRODUCTION
Microbes are present everywhere – in soil, water, air,
inside our bodies and that of other animals and plants
They are present even at sites such as deep inside the
geysers (thermal vents) where the temperature may be
as high as 100 degree Celsius, deep in the soil, under
the layers of snow several metres thick, and in highly
acidic environments
Microbes are diverse–protozoa, bacteria, fungi and
microscopic animal and plant viruses, viroids and
also prions that are proteinacious infectious agents
Microbes like bacteria and many fungi can be grown on
nutritive media to form colonies , that can be seen with the
naked eyes which are useful in studies on micro-
organisms.
several microbes are useful to man in diverse ways - 
MICROBES IN HOUSEHOLD PRODUCTS
MICROBES IN INDUSTRIAL PRODUCTS
MICROBES IN SEWAGE TREATMENT
MICROBES IN PRODUCTION OF BIOGAS
MICROBES AS BIOCONTROL AGENTS
MICROBES AS BIOFERTILISERS
BACTERIA
(a) Rod-shaped,magnified 1500X
(b) Spherical shaped,
magnified1500X; 
(c) A rod shaped bacterium showing    
flagella, magnified 50,000X
Page 5


MICROBES IN HUMAN
WELFARE
INTRODUCTION
Microbes are present everywhere – in soil, water, air,
inside our bodies and that of other animals and plants
They are present even at sites such as deep inside the
geysers (thermal vents) where the temperature may be
as high as 100 degree Celsius, deep in the soil, under
the layers of snow several metres thick, and in highly
acidic environments
Microbes are diverse–protozoa, bacteria, fungi and
microscopic animal and plant viruses, viroids and
also prions that are proteinacious infectious agents
Microbes like bacteria and many fungi can be grown on
nutritive media to form colonies , that can be seen with the
naked eyes which are useful in studies on micro-
organisms.
several microbes are useful to man in diverse ways - 
MICROBES IN HOUSEHOLD PRODUCTS
MICROBES IN INDUSTRIAL PRODUCTS
MICROBES IN SEWAGE TREATMENT
MICROBES IN PRODUCTION OF BIOGAS
MICROBES AS BIOCONTROL AGENTS
MICROBES AS BIOFERTILISERS
BACTERIA
(a) Rod-shaped,magnified 1500X
(b) Spherical shaped,
magnified1500X; 
(c) A rod shaped bacterium showing    
flagella, magnified 50,000X
 BACTERIOPHAGE
ADENOVIRUS WHICH
CAUSES RESPIRATORY
INFECTIONS