This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Not true about viral envelop? 
Select and explain. 
A. Lipid is derived from host cells, B. Protein is derived from virus itself, C. Dissolves in solvent, D. Propagates in next generation
D: Propagates in next generation
Answer: D: Propagates in next generation 
Explanation: Ans. is 'd' i.e., Propagates in next generation Envelope is lipoprotein in nature, lipid is derived from host cell, while protein is virus coded. Enveloped viruses are susceptible to the action of lipid solvents like ether, chloroform and bile salts. Envelop is not propagated in next generation. Rather progeny virions synthesize new envelop (by self protein and host lipid).