Exam Questions and Answers on Virus. In this article we will discuss about:- 1. Definition of Viruses 2. Morphology of Virus 3. Reaction to Physical and Chemical Agents 4. Multiplication of Virus inside the Host Cell 5. Cultivation 6. Classification 7. Major Groups of DNA and RNA Viruses. Contents: Definition of Viruses Morphology of Virus Reaction to Physical and Chemical [...]
Everything you need to know about viruses. Some of the frequently asked questions are as follows:- Q.1. Are enzymes found in virions? Give examples. Ans. Some virions contain enzymes which help them in infecting their hosts and to carry on their metabolic activities inside their host, e.g., HIV a retrovirus is an RNA virus which replicates inside the cells of [...]
The life cycle of HIV consists of following steps. They are:- 1. Entry 2. Reverse Transcription and Integration 3. Transcription and Translation 4. Assembly, Budding and Maturation. Step # 1. Entry: Virus binds to the host cells by attaching its Gp 120 to the host cell receptor. CD4 molecule present on T lymphocytes is a predominant receptor. Entry of virus [...]