RNA is single-stranded and composed of nitrogenous bases, a phosphate group, and pentose sugar.
Explanation:
RNA is different from DNA because instead of having two matching bases; it is only made of one strand of nitrogenous bases. These bases are attached to the phosphate, which holds the whole strand of RNA together. The sugar acts as a carrier for the bases. The sugar in RNA is known as ribose and contains 5 carbon molecules. This is why it is called pentose sugar.
Pathogenicity is the ability to produce disease in a host organism
Microbes express their pathogenicity by means of their virulence, a term which refers to the degree of pathogenicity of the microbe
The relationship between a host and a pathogen is dynamic, since each modifies the activities and functions of the other
The outcome of such a relationship depends on the virulence of the pathogen and the relative degree of resistance or susceptibility of the host, due mainly to the effectiveness of the host defense mechanisms
Hence, general requirements for any organism to cause disease within a host are: evasion of host defenses
, gaining access to the host via a portal of entry, adherence to host tissues
