Question

The rabies virus consists of
A. Single-stranded RNA
B. Double-stranded RNA
C. Single-stranded DNA
D. Double-stranded DNA

Answer 1

Hint: There are some symptoms of rabies such as irritability, weakness etc. and sometimes seizure. It affects the nervous system of mammals.

Complete step-by-step answer:
- Single-stranded RNA: Rabies virus is like a bullet-shaped with about 10-15 nm in size. Its surface is covered by the spike-like glycoprotein polymers. It is a parasite that uses mammals as their host to replicate. They mostly attack the warm-blooded mammals. They are made up of a single strand of RNA which have a five gene coding for a structural protein of the virus.
- Double-stranded RNA: Double-stranded RNA is found in viruses which are polyphyletic groups. It is found in the rotaviruses with a diameter of about 75 nm. It is the largest among the viruses. Rotaviruses have a complex morphology.
- Single-stranded DNA: It is found in the parvoviruses which have a single-stranded linear DNA genome. They are circular and mostly infect plants only.
- Double-stranded DNA: Double-stranded DNA is found in most of the viruses. Herpesvirus is the virus that has double-stranded DNA which is covered by the protein coat and outer envelopes. A palisade is a protein layer that is fixed within the core of the envelopes.
Hence, the correct option is A.

Note: Rabies is caused by the lyssavirus and the Australian bat lyssavirus. The saliva of the infected animals can also transmit rabies when it comes in contact with eyes, mouth etc.