Bacteria and Gram Staining - Mock Test 3

Question 21

Which of the following vaccine contains attenuated form of bacteria?

A) BCG B) TAB C) Polio D) Cholera

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Question 22

Premunition is particularly seen in ?

A) Ascaris B) Giardia C) Plasmodium D) None of these

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Question 23

The largest protozoa is ?

A) Balantidium coli B) Entamoeba coli C) Trichomonus vaginalis D) Toxoplasma gondii

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Question 24

A polysaccharide capsule is present on cryptococci which ?

A) Inhibits phagocytosis B) Is an aid to diagnose C) Cross reacts with rheumatoid factor D) All of these

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Question 25

Fungal disease in human is caused by ?

A) Inhalation of conidia B) Invasion of mucous membrane C) Contamination of wounds with conidia or myceliat fragments D) All of these

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Question 26

Mycoplasmas differ from Chalamy-diae in that, it?

A) has ability to cause urinary tract infection B) lack of atrue bacterial cell wall C) susceptible to penicillin D) All of these

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Question 27

The organism responsible for retarding penetration of host cell by an inhibitor of ATP synthesis?

A) M.pneumoniae B) Rickettsia rickettsii C) Chlamydia trachomatis D) Chlamydia psitacci

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Question 28

The main difference in true bacteria and mycoplasma is that it does not posses ?

A) Flagella B) Cell wall C) ATP synthesis D) A capsule

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Question 29

The properties common to Gram positive and negative cell walls are?

A) Equal susceptibility to hydrolysis by lysozyme B) Peptide crosslinks between polysaccharides C) Rigid peptoglycon activity D) Greater resistance to drying than vegetative cell.

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Question 30

Freeze-etch particles (used in preparing cell for electron microscopy) can be located in the?

A) Cytoplasm B) Cell wall C) Cell membrane D) Nucleus

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