Question

Bacteria is our friend or enemies to support your answer give one example

Answer 1

Answer:

Bacteria is our friend as well as our friend.

Example- Lactobacillus convert milk to

curd.

Example- Some bacterias are all harmful

for our health.

Answer 2

Answer:

useful bacteria are friends -

1)

Some bacteria in herbivores help in digesting cellulose present in Grass and leaves eaten by them.

2)

Acetobacter helps in the production of vinegar from fruit juices and lactobacillus helps in making curd from milk.

3)

Some bacteria are used for preparing vaccines and antibiotics such as streptomycin and gramicidin.

Harmful bacteria are enemies -

1) Bacteria spoil milk ,meat ,fruits, vegetables and other food items . consumption of spoilt or infected food might result in food poisoning or other health disorders. Some of the diseases caused by bacteria are diphtheria, whooping, cough, tetanus, tuberculosis, typhoid and cholera

2) Bacteria cause diseases in plants and animals as well. Some of the common bacterial diseases are bacterial wilt in plant's and anthrax in animals.