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The tobacco mosaic virus (TMV) is approximately ___ in size.

300 × 18 nm
3000 × 5 nm
800 × 10 nm
700 × 30 nm
Additional Questions

Which one of the following viruses contains both DNA and RNA?

Answer

Viruses are no more "alive" than isolated chromosomes because

Answer

A T-series bacteriophage can be recognized by its

Answer

Which one of the following statements about viruses is correct?

Answer

Viroids have

Answer

Chromosomes in a bacterial cell can be 1 - 3 in number and

Answer

How does enveloped virus enter into host cells?

Answer

dsRNA is found in

Answer

Tailed bacteriophages are

Answer

Match the types of bacteria listed in column I with their activity given in column II. Choose the correct combination of alphabets of the two columns.

Column - I (Types of bacteria)Column - II (Activity)
A Streptomycesp Food poisoning
B Rhizobiumq Source of Antibiotics
C Nitrosomonasr Nitrogen fixation
D Acetobacters Nitrification
t Vinegar synthesis

Answer
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