Understanding Viral Replication

What is the primary reason viruses are not considered alive?

• They are too small to be seen with the naked eye.

• They do not contain DNA.

• They cannot replicate without a host cell.

• They do not have a cellular structure.

What is the role of the capsid in a virus?

• It protects the viral nucleic acid.

• It stores energy for the virus.

• It helps the virus to move.

• It allows the virus to photosynthesize.

How do viruses typically enter host cells?

• By forming pores or fusing with the membrane.

• By osmosis.

• Through endocytosis.

• Through active transport.

What is a common method for non-enveloped viruses to exit host cells?

• Budding off the cell membrane.

• Lysis or rupture of the host cell membrane.

• Exocytosis.

• Diffusion through the cell membrane.

Why are vaccines crucial in controlling viral spread?

• They directly kill viruses.

• They provide immediate immunity.

• They help achieve herd immunity.

• They prevent viruses from mutating.