Question

5)

Which of the following is not applicable to Listeria monocytogenes, or to the disease it causes, listeriosis?

	A.	most people with healthy immune systems are not affected by it, or show only mild symptoms of disease
	B.	it can grow at refrigeration temperature
	C.	it is a facultative intracellular pathogen
	D.	polymerization of actin on its cell surface allow it to move
	E.	listeriosis is typically transmitted by soil

6)

Which of the following statements among A-D is not accurate regarding complement?

	A.	the effect of complement typically depends on activation of complement factor C3 and C5
	B.	complement consists of both protein factors and cellular forms
	C.	activated complement factors can combine to form pores in the plasma membrane of infecting cells and kill them
	D.	complement is part of your innate immune system, but also works with the adaptive immune system
	E.	A-D are all accurate statements regarding complement.

Answer 1

Question :5

Answer:

Option E.Listeriosis is typically transmitted by soil.

This statement is not applicable to Listeria monocytogenes or Listeriosis . Listeriosis is typically transmitted by ingestion of contaminated food products such as milk, cheese, ice cream, egg raw or smoked fish, chicken, meat etc

• New borns and pregnant mothers who have a weak immune system are affeted more. People with healthy immune systemshow only mild symptoms. Therefore option A  is a true statement
• Listeria monocytogenes can grow even at 0oC. Therefore option B is a true statement
• It is a facultative anaerobe and survive intracellularly. Therefore option C is a true statement
• Polymerization of actin help isteria monocytogenes to move within eukaryotic cell. this actin based motility is used by the organism for cell to cell spread