USEFUL MICROORGANISM

ROLE OF MICROORGANISM

Decaying process

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

What is the benefit (kebaikan)?

• Its enriches the soil and makes essential substances available to plants in a form that they can use.

– ia menjadikan tanah lagi subur dan membekalkan sebatian yang diperlukan oleh tumbuhan.

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?

Herbivores depend on bacteria that live in their stomach to digest cellulose

This bacteria secretes (merembeskan) cellulase into the stomach

Beside’s animal?

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.

BACTERIA THAT HELP IN DIGESTION….

1.Lactobacillus Acidophilus2.Bifidobacteria 3.Streptococus Thermophilus4.Lactobacilus Bulgaricus

Where we can find this bacteria except in intestines ?

YOGURT YAKULT

MEDICINE

• Some type of microorganism produce important drugs called ANTIBIOTICS..

• Functions of antibiotics….• Weaken • Destroy other microorganism

• Penicillium notatum is a GREEN MOULD

• Its produces antibiotic called PENICILLIN

Disease That Can Cured By Using Penicillin

Genetically enginereed

• Some bacteria have been genetically engineered

• Why?• To produce certain vaccines that are used to prevent

infectious disease.• Produce insulin which used to treat diabetics

AGRICULTURE

• Bacteria play important roles to promote the plant growth..

• Bacteria• Break down dead plants and dead animals by releasing

AMMONIA

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

Production of bread

1. Yeast causes the bread to rise by producing carbon dioxide from the carbohydrates in the dough.

2. Carbon dioxide gas bubbles released in the dough causes it to rise.

3. So the bread become fluffy

YEAST

Production of milk, yogurt n cheese

• Certain bacteria are used in the production of milk, yogurt and cheese.

• This process called as FERMENTATION