All of the following are general propeies of Viruses except -: (A) May contain both DNA and RNA, (B) Form extracellular infectious paicles, (C) Heat labile, (D) Not affected by antibiotics
Answer is A. Ans. is 'a' i.e., May contain both DNA and RNA Propeies of viruses . Viruses are obligate intracellular parasites . They lack enzymes necessary for protein and nucleic acid synthesis and are dependent for replication on the synthetic machinery of host cells -4 so, they cannot grow in cell free culture media. . They do not have cellular organization. . They are unaffected by antibacterial antibiotics. . They contain only one type of nucleic acid, either RNA or DNA, never both. . They multiply by a complex process and not by binary fission. . The extracellular infections virus paicle is called the virion. . With few exceptions, viruses are very heat labile.