Which of the following organism causes acne?
What is the importance of childhood immunisation programmes?
Which of the following system of our body works against disease causing microbes?
Sleeping sickness is caused by ____________, a protozoan.
It was found that milkmaids who had cowpox did not suffer from smallpox later?
Making anti-viral drugs is more difficult than making anti-bacterial medicines because
Infants are vaccinated against many diseases. By vaccination their immune system gets
Why is the body of an AIDS patient unable to fight off even minor infections like common cold?
The organisms which carry the infectious agents from a sick person to another potential host are known as
How does penicillin kill bacteria?
Penicillin kills bacteria through binding of the beta lactam ring to DD-transpeptidase, inhibiting its cross - linking activity and preventing new cell wall formation. The cell walls of gram - negative bacteria are surrounded by a lipopolysaccharide (LPS) layer than prevents antibiotic entry into the cell.