general micro and immunology

.Which of the following statement is correct about viruses?

.A 35 years old man who is HIV antibodies positive and has a CD 4 count of 85 cells. He recently had a seizure and an MRI scan indicates a lesion in the temporal lobe.A brain biopsy specimen reveals multinucleated giant cells with intra-nuclear inclusions.Which of the following is the most likely cause?

A 35 year old man who is HIV antibody positive and has a CD 4 count of 30 says “I can not remember the simplest things”.You are concerned about dementia. An MRI indicates several widely scattered lesions in the brain.Over the next 4 months he develops visual field defects,becomes paralysed and dies.Autopsy reveals that many neurons of the brain has lost myeline and contained intra-nuclear inclusions.Electrone microscopy reveals the inclusions contain non-enveloped viruses.Which of the following is the most likely cause?

A 12 year old girl had a seizure this morning and was rushed to the hospital. On examination her temperature was 400 C and she had no nuchal rigidity.CT scan revealed no abnormality. A spinal tap was done and the protein and glucose were normal.Gram stain of CSF shows no organism or polymorphs.Routine blood culture and CSF cultures grew no organisms.She was treated with various antibiotics but became comatose and died 2 days later.Autopsy of brain showed eosinophilic inclusion bodies in the cytoplasm of the neurons.Which of the following is the most likely cause?

Aspergillosis is recognized in tissues by the presence of

Which of the following media is used to culture fungi?

An AIDS patient with a persistent cough has shown progressive behavioral changes in the past few weeks after visiting a zoo. A CSF sample is collected and encapsulated yeast like organism is observed. What is the most likely organism?

The mycobacterium tuberculosis Contains complex lipids including Mycolic acids, which property is conferred to the mycobacterium by them?

Selective media needed for isolation of shigella species can be:

Which of the following is true of Haemophilus influenzae?

Listeria monocytogenes shows which of the following characteristics?

A diagnosis of diphtheria is confirmed by:

In association with anaerobic fusiform bacteria gingivo-stomatitis and Vincent’s angina is caused by

Spore-forming anaerobic bacteria are usually present as normal flora of colon of animals, which one of them is responsible for causing flaccid paralysis after food poisoning.

A 35 years old man with the history of pain and swelling of his axillary lymph nodes, high grade fever, myalgias and generalized weakness. On examination the affected nodes are extremely tender. Pus from the node is sent for evaluation to microbiology lab.Waysonn’s staining of his specimen’s smear shows safety pin appearance of the organism. What is the most probable organism responsible for his illness?

Infection with the Malassezia furfur organism causes skin hypopigmentation.It is found most frequently in hot and humid regions. It is also responsible for causing one of the cutaneous mycosis. Infectin with malassezia furfur also causes which of the following disorders:

Peptic ulcer disease: An ulcer is now known to be the result of an imbalance between aggressive and defensive mechanisms in the stomach and duodenum. Part of that imbalance can be attributed to infection by H. pylori. The organism is

which of the following is RNA virus

the antiphagocytic property of group A strept. is associated with which of the following :

general steps in viral multiplication cycle are

which of the following is associated with a deficiency of third component of complement C3

which of the following components enchances the binding of antigen antibody complex to macrophages :

Naturally acquired active immunity would be most likely acquired through which of the following processes?

Which of the following substances will not stimulate an immune response unless they are bound to a larger molecule?

The ability of the immune system to recognize self antigens versus nonself antigen is an example of: