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MCQs on Viruses and Viroids For GPAT, AIIMS, JIPMER & NEET
Before we discuss about these Classification of Viruses and Characteristics of Viruses questions with Answers, we have to know is the most important topic in biology for GPAT, AIIMS, JIPMER, CSIR NET, NEET PG & Pharmacist Exam and all medical exams. so kindly do check it. Our live learns team prepared these questions with answers for you free in pdf format. It is easy to ace your exam.
MCQs on Viruses and Viroids
1. First animal pathogenic virus was discovered by_______
(1) Loeffler and Frosch
(2) Twort
(3) Ivanowski
(4) Miller
Ans. (1)
2. In phage culture________?
(1) whole virus enters in the bacteria and multiplies
(2) only DNA of the virus enters and multiplies
(3) only protein of the virus enters and multiplies
(4) nonc of the above
Ans. (2)
3. AIDS is due to________?
(1) deficiency of Ta lymphocytes
(2) high blood pressure
(3) deficiency of riboflavin
(4) bacterial infection
Ans.(1)
4. Average size range of virus is____________
(1) 10-30 nm
(2) 20-30 nm
(2) 100-1000 nm
(4) 1-10 nm
Ans.(2)
5. Longest known virus is____
(1) o x 174
(2) TMV
(3) Ti phage
(4) citrus tristeza
Ans. (4)
6. In a virus infection on bacterial cells, phage ghost” represents
(2) protein coat
(1) DNA
(3) both DNA & protein coat
(4) none of the above
Ans. (2)
7. Virion refers to___________?
(2) protein coat of virus
(1) dead virus
(3) complete form of virus
(4) nucleic acid of virus
Ans. (3)
8. How many genes are present in the simplest virus__________?
(4) 9
(3) 8
(2) 5
(1) 1
Ans. (2)
9. Tailed bacteriophages are____________
(1) motile on surface of plant leaves
(2) motile on surface of bacteria
(4) actively motile in
(3) non-motile water
Ans. (3)
10. Which of the following living phenomena is absent in viruses___?
(2) Replication
(1) Mutation
(4) Energy production
(3) Protein synthesis
Ans.(4)