General Properties of Viruses MCQs

Ans. is 'a' i.e., Chick embryo fibroblast Chick embryo fibroblast is primary cell culture.

In DNA viruses, the DNA replication occurs in the nucleus except in poxviruses, which synthesize DNA in the cytoplasm. In RNA viruses, the RNA replication occurs in the cytoplasm except in retroviruses and orthomyxoviruses, which synthesize RNA in the nucleus. Option D is incorrect because Papilloma virus is not an RNA virus Reference: Essentials of Medical Microbiology, by Apurba Sastry and Sandhya Bhat, 3rd Edition, Page Number 83

Reoviridae is a family of non-enveloped RNA viruses that includes rotavirus, a major cause of gastroenteritis. The other options either include DNA viruses or non-gastroenteritis related RNA viruses. Key Takeaway: Identifying Reoviridae as a family of non-enveloped RNA viruses associated with gastroenteritis is essential for understanding and managing outbreaks of this illness, especially in children. Rotavirus vaccination is associated with intussusception. Tags: neet 2023 Difficulty Level: Medium CDC Reference: CDC - Rotavirus

This patient with acute onset of itchy, burning rash and grouped vesicles on genital examination has recurrent genital herpes simplex virus (HSV) infection. Latency and reactivation in the dorsal root ganglion of host sensory neurons is the mechanism underlying the recurrent symptoms seen in herpes simplex virus 1 and 2 infection. Under certain conditions (e.g., immunodeficiency, stress, trauma), HSV may reactivate and multiply in the dorsal root ganglia of the trigeminal (HSV-1) or sacral (HSV-2) nerves, producing recurrent flares, as are seen in this patient. Other Options: TB undergoes latency in Macrophages HIV goes into latency in Lymphocytes JC virus undergoes latency in Astrocytes Reference: Essentials of Medical Microbiology, by Apurba Sastry and Sandhya Bhat, 3rd Edition, Page Number 550