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Q: Virus consists of
O: (a) nucleic acid
(b) protein
(c) both a and b
(d) none of these
Ans. (c) both a and b
Q: Viruses that infect bacteria, multiply and cause their lysis are
O: (a) lysozymes
(b) lipolytic
(c) lytic
(d) lysogenic
Ans. (c) lytic
Q: Potato leaf roll or leaf curl of papaya are caused by
O: (a) fungi
(b) viruses
(c) bacteria
(d) nematodes
Ans. (b) viruses
Q: Infectious proteins are present in
O: (a) Gemini viruses
(b) prions
(c) viroids
(d) satellite viruses
Ans. (a) Gemini viruses
Q: Helical contractile sheath occurs in
O: (a) bacteria
(b) bacteriophage
(c) retroviruses
(d) fungi
Ans. (b) bacteriophage
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