Both the eye and the respiratory tract are protected against infections by which

Question

Both the eye and the respiratory tract are protected against infections by which of the following? A) the mucous membranes that over their surface B) the secretion of complement proteins C) the release of slightly acidic C) the secretion of can be their surface E) interferon produced by immune cells How do people on tract salmonella poisoning? A) The microbe can survive the acidic environment of the stomach and resist lysosomal degradation in macrophages. B The chemotactic messengers released by the salmonella bacterium do not attract sufficient neutrophils to entirely destroy the infection, C) There is a delay in selection of the population of that recognize and are responsible for fighting these bacterial D) The bacterium releases chemical messengers that make it resistant to E) The combination of at the meal reduces the pH of the stomach sufficiently so that the bacterium was not destroyed. Which statement about the complement system is true? A) These proteins are involved in innate immunity and not acquired immunity B) These products are secreted by. T cells and other CDS cells. C) This group of proteins includes interferon's and interleukins D) These proteins are one group of antimicrobial proteins acting together in cascade fashion. E) These proteins individually

Explanation / Answer

1) The eyes and the respiratory tract are both protected against infections by the secretion of lysozyme onto their surfaces.

Lysozyme is abundant in secretions called tears(eyes), saliva, human milk, and mucus( respiratory tract)

So answer is D

2) people contract salmonella poisoning by The microbe can survive the acidic environment of the stomach and resist lysosomal degradation in macrophage

So Answer is A

3) complement system are group of antimicrobial proteins acting together in cascade fashion

The complement system is a group serum proteins, acting together in cascade fashion. Three different pathways are involved

classical pathway
alternative pathway
mannose-binding lectin pathway

So Answer is D

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