Which bacterium causes peptic ulcers? Who discovered the pathogen for the first time?

Give two examples for each of the following: (a) Acute diseases; (b) Chronic disease; (c) Infectious diseases; (d) Non-infectious diseases.

Name two diseases caused by protozoans.

What are their causal organisms?

What are antibiotics? Give two examples.

Fill in the blanks.

(a) Pneumonia is an example of .... disease.

(b) Many skin diseases are caused by ..........

(c) Antibiotics commonly block biochemical pathways important for the growth of ........

(d) Living organisms carrying the infecting agents from one person to another are called