Microorganisms: Friend or Foe Class 8 PPT

 Page 1


WHAT ARE
MICROORGANISMS?
Class-8
Page 2


WHAT ARE
MICROORGANISMS?
Class-8
What are Microorganisms?
Microorganisms are tiny organisms that are too small to be
seen with the naked eye. They include bacteria, fungi,
protozoa, some algae, and viruses.
Page 3


WHAT ARE
MICROORGANISMS?
Class-8
What are Microorganisms?
Microorganisms are tiny organisms that are too small to be
seen with the naked eye. They include bacteria, fungi,
protozoa, some algae, and viruses.
Microorganisms can survive in
various environments, from
extreme cold to hot springs.
They may live independently or in
colonies, and some can reside
inside other organisms.
Where do Microorganisms Live?
Page 4


WHAT ARE
MICROORGANISMS?
Class-8
What are Microorganisms?
Microorganisms are tiny organisms that are too small to be
seen with the naked eye. They include bacteria, fungi,
protozoa, some algae, and viruses.
Microorganisms can survive in
various environments, from
extreme cold to hot springs.
They may live independently or in
colonies, and some can reside
inside other organisms.
Where do Microorganisms Live?
Microorganisms play vital roles in our
lives.
They have beneficial uses in food
production (e.g., curd, bread), alcohol
fermentation, waste decomposition,
and medicine (e.g., antibiotics).
Microorganisms can enhance soil
fertility through nitrogen fixation by
certain bacteria.
Microorganisms and Us
Bacteria
Virus
Page 5


WHAT ARE
MICROORGANISMS?
Class-8
What are Microorganisms?
Microorganisms are tiny organisms that are too small to be
seen with the naked eye. They include bacteria, fungi,
protozoa, some algae, and viruses.
Microorganisms can survive in
various environments, from
extreme cold to hot springs.
They may live independently or in
colonies, and some can reside
inside other organisms.
Where do Microorganisms Live?
Microorganisms play vital roles in our
lives.
They have beneficial uses in food
production (e.g., curd, bread), alcohol
fermentation, waste decomposition,
and medicine (e.g., antibiotics).
Microorganisms can enhance soil
fertility through nitrogen fixation by
certain bacteria.
Microorganisms and Us
Bacteria
Virus
Beneficial microbes aid in digestion, boost
the immune system, and contribute to
nutrient absorption.
They are used in various food production
processes, fermentation, and medicine.
Microorganisms are used for large-scale
production of alcohol, wine, and acetic acid.
Yeast is commonly employed in alcohol and
wine production.
1.Friendly Microorganisms:
2.Commercial Uses of Microorganisms:
Microorganisms and Us
Production of alcohol
with the help of yeast