Science Write the Correct Alternative.

……………………. can grow and reproduce only in living cells.

The bacteria which spoil cooked food are ……………………. .

A yeast ……………………. is used to absorb the toxins released during the production of palm oil.

Molasses is fermented with the help of yeast called ……………………. .

During fermentation, yeast cells convert carbohydrates into ……………………. .

Lactobacilli kill the harmful bacteria like ……………………. present in the alimentary canal.

The ……………………. destroys harmful microbes present in the milk.

The Lactobacilli convert lactose, the sugar in the milk, into ……………………. .

Bird flu (H7N9) and swine flu (H1N1) are caused by ……………………. .

Malaria is caused by ……………………. .

……………………. can be prevented by vaccination.

Pneumonia is caused by ……………………. .

Dengue is caused by ……………………. .

AIDS is caused by ……………………. .

……………………. proved that the anaerobic bacterium Clostridium botulinum is responsible for food poisoning.

Antibiotic penicillin was discovered by ……………………. .

……………………. is a narrow-spectrum antibiotic.

……………………. is a broad-spectrum antibiotic.

Antibiotics mainly act against ……………………. .

……………………. is a smokeless and high quality fuel.

……………………. conducted important research on the toxin responsible for gas gangrene and the antitoxin responsible for treating it.

……………………. produce bottle-shaped endospores in adverse conditions.

Fungi release ……………………. into the food, making the food poisonous.

Carbon compounds obtained from bacteria and fungi for destroying or preventing the growth of harmful micro-organisms are called ……………………. .

A mutually beneficial relationship is called ……………………. .

Bacteria found in the root nodules of leguminous plants are ……………………. .

Yoghurt has a specific sour taste due to ……………………. .

The rod-shaped bacteria found in milk or buttermilk are called ……………………. .