Post on 12-Jan-2017
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MICROORGANISM
ROLE OF MICROORGANISM
Decaying process
1. Many bacteria help decompose (menguraikan) dead organism and animal wastes into chemical compound such as ammonia.
2. In sewage treatment plant ( loji rawatan kumbahan),
– bacteria are use to break down the complex animal and plant matter into simple compounds
ROLES MICROORGANISM IN DIGESTION
ONE OF THE MAIN COMPONENT OF PLANT IS CELLULOSE
• Cellulose is hard to digest by the animal….• How they digest the cellulose…?• Cellulose can be digest by enzyme named
cellulase.• How they can get cellulase?
FOOD DIGESTION
• Certain kinds of bacteria live in intestines of human (usus manusia) and other microorganism.
• Why they live in our intestines?• They help in digestion and destroy harmful
microorganism.
Where we can find this bacteria except in intestines ?
YOGURT YAKULT
AMMONIA
• Adds nitrogen into the soil (tanah)• The nitrogen fixing bacteria in the soil change
the ammonia into nitrates.
• This nitrates will be used by plants
Ammonia Nitrates
nitrogen fixing bacteria
Why plants need nitrates?
• They need nitrates to make amino acids
• But…………………………….• Pea and bean plants use bacteria Rhizobium
which directly convert nitrogen into acid amino
Nitrates Amino acids
Rhizobium bacteria• Live in plant roots
INDUSTRY
• Bacteria are used in the production of• Milk• Yogurt• Cheese • Vinegar • Soy sauce • Chocolate • Certain vitamin B• Citric acids
YEAST
Production of milk, yogurt n cheese
• Certain bacteria are used in the production of milk, yogurt and cheese.
• This process called as FERMENTATION