Bacteria

Question 1

What is bacterial capsule

Answer 1

Bacterial capsule is a gelatinous layer,covering the entrire bacterium,situated outer to the cell wall

Question 2

Functions of capsule

Answer 2

It prevents phagocytosis
Adhesion to host cell surface
Invasiveness

Question 3

Importance of bacterial capsule

Answer 3

It is a determinant of virulence of bacteria
Specific identification of a bacteria can be made
Capsular polysaccharides are used as the antigens in certain vaccines
The capsule may play a role in the adherence to human tissues

Question 4

Dysentery is caused by

Answer 4

E.coli(most common all over the world)
Shigella
Salmonella
Yersinia
Campylobacter (most common in children )
Clostridium spp