Understanding Viruses

What is the primary difference between DNA and RNA viruses?

• DNA viruses are transmitted by vectors, RNA viruses are not.

• DNA viruses infect humans, RNA viruses infect animals.

• DNA viruses use DNA as genetic material, RNA viruses use RNA.

• DNA viruses have a lipid envelope, RNA viruses do not.

Which of the following viruses lacks an outer envelope?

• Influenza virus

• HIV

• Adenovirus

• Zika virus

How do zoonotic viruses differ from other viruses?

• They only infect humans.

• They are always vector-borne.

• They can jump between animals and humans.

• They are transmitted through respiratory droplets.

Which virus is known for its role in cancer development?

• Rabies virus

• Ebola virus

• HPV

• Rhinovirus

What is a key characteristic of viruses that target specific tissues?

• They cause mild symptoms.

• They are transmitted by mosquitoes.

• They can cause severe symptoms like organ failure.

• They only infect animals.