Understanding Viruses and the Lytic Cycle

What is a virus primarily composed of?

• Vitamins and minerals

• Nucleic acid and protein

• Carbohydrates and lipids

• Water and salts

Why are viruses not classified as living organisms?

• They do not have a nucleus

• They cannot move on their own

• They are not made of cells and cannot reproduce without a host

• They do not have a cell wall

Which of the following processes do viruses NOT perform?

• All of the above

• DNA replication

• Cellular respiration

• Photosynthesis

What is the outer protein coat of a virus called?

• Envelope

• Capsid

• Cell wall

• Membrane

What is the function of tail fibers in bacteriophages?

• Movement

• Energy production

• Anchoring and attaching to host cells

• Replication

What is the first stage of the lytic cycle?

• Entry

• Replication

• Assembly

• Attachment

During which stage of the lytic cycle does the virus inject its nucleic acid into the host cell?

• Attachment

• Entry

• Replication

• Assembly

What happens during the replication stage of the lytic cycle?

• The virus attaches to the host cell

• The virus injects its DNA or RNA into the host cell

• The viral DNA is replicated inside the host cell

• New viruses are assembled

What is the final stage of the lytic cycle?

• Entry

• Assembly

• Release

• Replication

What causes the host cell to burst during the lytic cycle?

• The host cell overheats

• The host cell is attacked by the immune system

• The host cell runs out of nutrients

• Enzymes created by the virus cause the cell to burst