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 [...]
Exploitation of plant viruses as transformation vectors by massive infection may be harmful and even deleterious to the target plants. It is still however able to express and produce foreign proteins. Plant viruses must exhibit some of the exemplary features before they are considered as vectors. They should extend their broader host-range, spread of seed transmission and carry additional copies [...]
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 [...]