Bacterial Structure and Function

Question 1

How does the capsule help in evasion of phagocytosis?

Answer 1

It avoids the complement cascade

Question 2

What is the polypeptide capsule made of?

Answer 2

D-glutamic acid

Question 3

What do you call a bacterial capsule that is loosely adherent?

Answer 3

Glycocalyx

Question 4

What is the other name of K antigen?

Answer 4

Capsule

Question 5

What triggers the alternative pathway of the complement cascade?

Answer 5

Hydrolysis of C3

Question 6

What are the 2 C3 convertases?

Answer 6

C4b2a, C3bBb

Question 7

Meningococcal disease evades what pathway?

Answer 7

Alternative pathway

Question 8

Gonococcal infection evades what part of the complement cascade?

Answer 8

MAC formation

Question 9

What component of the Gram - cell wall contains endotoxin?

Answer 9

Lipid A

Question 10

What type of motility is exhibited by flagellum?

Answer 10

Wave-like/undulating motility

Question 11

What is the decolorizer used in gram stain?

Answer 11

Acetone alcohol

Question 12

What stain is used to visualize endospores in Schaeffer fulton staining?

Answer 12

Malachite green

Question 13

What bacterial component is visualized in Fuelgen stain?

Answer 13

Nucleic acid

Question 14

What is the culture medium used to isolate Mycobacterium?

Answer 14

Lowenstein-Jensen

Question 15

This type of bacterial recombination involves displacement of a homologous segment of the recipient DNA

Answer 15

Transformation