Question

Which statement regarding viruses is INCORRECT?

	a.	Viruses are only able to replicate within specific types of host cell
	b.	Viruses always cause symptoms of infectious disease
	c.	Viruses use host ribosomes to make viral proteins
	d.	Virus particles contain either RNA or DNA, not both
	e.	Viruses are assembled from constituent parts

Answer 1

The incorrect statement is b.

Virus doesn't always shows symptoms of infectious disease. Sometimes they are asymptomatic.

Rest all the other statements about virus are correct. Virus contain either RNA or DNA as their genetic material , they enter the host cell and then the host treat the viral DNA or RNA as its own. Thus virus uses host ribosome to make viral protein.

Virus replicates it's DNA and protein coat within host cell and then assemble to form new virus particles.

Virus are often very specific about their host within which they replicate.