Which of the following is a fomite? A) water B) droplets from a sneeze C) pus D)

Question

Which of the following is a fomite? A) water B) droplets from a sneeze C) pus D) insects E) baby pacifier All of the following are components of the innate immune system except: a) complement proteins b) mucus c) antibodies d) interferon e) antimicrobial peptides Toll-like receptors: a) come from outside the body and stimulate a cytokine b) act nonspecifically to cause cell killing c) are a set of receptors that when activated produce a membrane attack complex d) recognize molecular patterns unique to pathogens Each of the following bacterial products provides protection from phagocytic digestion EXCEPT A) M protein. B capsules. C) phagolysosomes. D) leukocidins E) biofilms. All of the following are true regarding natural killer (NK) cells EXCEPT A) they are a type of lymphocyte. B) they are found in tissues of the lymphatic system. C) they have the ability to kill infected body cells and some tumor cells. D) they destroy infected body cells by phago

Explanation / Answer

1. Answer is option E. Fomite is defined as any material that are most likely to catch infection.

2. Answer is option C. The innate immunity is the non-specific defense mechanism that come into play immediately after an antigen attack.

3. Answer is option C. Toll like receptors are the class of proteins that play a key role in innate immunity.

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