Microorgnisms: Friend & Foe

Yeast is used in the production of
1. sugar
2. alcohol
3. hydrochloric acid
4. oxygen
The following is an antibiotic
1. sodium bicarbonate
2. streptomycin
3. alcohol
4. yeast
Carrier of malaria-causing protozoan is-
1. female Anopheles mosquito
2. cockroach
3. housefly
4. butterfly
The most common carrier of communicable diseases is-
1. ant
2. housefly
3. dragonfly
4. spider
The bread or idli dough rises because of-
1. heat
2. grinding
3. growth of yeast cells
4. kneading
The process of conversion of sugar into alcohol is called-
1. nitrogen fixation
2. moulding
3. fermentation
4. infection
Alcohol is produced with the help of-
1. sodium chloride
2. yeast
3. nitrogen
4. carbon-di-oxide
Which of the following drug is an antipyretic?
1. insulin
2. alcohol
3. streptomycin
4. paracetamol
The status of algae in the aquatic food chain is-
1. consumers
2. producers
3. host
4. small in size
The rod shaped bacteria are called-
1. bacillus
2. coccus
3. vibrio
4. spirilla