Flagella arranged along the sides of the bacteria _____________.

(a)

Peritrichous

(b)

Monotrichous

(c)

Lophotrichous

(d)

Amphitrichous

Which substance is produced within an organism to prevent the spread of microorganism?

(a)

Antiseptics

(b)

Antibiotics

(c)

Antibodies

(d)

All the above

Which antibiotic is extracted from fungi?

(a)

Streptomycin

(b)

Erythromycin

(c)

Bacitracin

(d)

Penicillin

Which of the following micro organism helps in fermentation?

(a)

Yeast

(b)

Mould

(c)

Mushroom

(d)

Rhizopus

Carrier of malaria causing protozoa

(a)

Cockroach

(b)

Housefly

(c)

Butterfly

(d)

Female Anopheles mosquito

The most common carrier of communicable diseases is __________.

(a)

ant

(b)

dragonfly

(c)

lizard

(d)

housefly

Which disease is treated using antibiotics?

(a)

AIDS

(b)

Dengue fever

(c)

Cholera

(d)

Hepatitis B

This bacteria gives special aroma to coffee beans and tea leaves.

(a)

Bacillus megaterium

(b)

Lactobacillus

(c)

Aspergillus niger

(d)

None

Why should we avoid standing close to a tuberculosis patient while she/he is coughing?

Polio drops are not given to children suffering from diarrhoea. Why?

While -returning from school, Suresh ate chaat from a street hawker, when he reached home, he felt ill and complained a stomach ache, what could be the reason.

What is incubation period?

Classify the following into friendly and harmful microorganism.
Yeast, Malarial parasite, Lacto bacillus bread mould, Rhizobium, Bacillus Anthracis, Aspergillus niger, Rubeola.

a) Name two diseases that are caused by virus?
b) Write any two important characterisics of virus.

How can we prevent the following diseases.
a) Cholera b) Typhoid c) Hepatitis A

Explain the classification of diseases based on their occurance.

List out the measures to be taken to prevent vector borne diseases transmitted through mosquitoes.

Name the causative agent of Tuberculosis in human. How does the pathogen gain entry into the human body? write the diagnostic symptom and mention the organ that is affected in severe cases, How is it treated.