Viruses: Test Review

What it the purpose  of glycoprotein on the virus?

• attach to host cells
• obtain nutrients
• physical support
• defend against other organisms

What happens in the lysogenic cycle?

• A virus injects energy into a host cell causing the cell to replicate

• Bacteria inject genetic material into a host cell killing the cell

• A virus injects genetic material into the host cell's DNA and the cell makes new cells with the viral genetic material

• Bacteria inject DNA into a host cell causing it to replicate

What do viruses need to reproduce?

• they need genetic material
• They need a host cell
• They need  bacteria
• They need insulin

Reasons that viruses are considered to be nonliving is because

• They are not cellular
• They cannot reproduce on their own
• They  cannot obtain and use energy
• all of the above

What process is this?

• phagocytosis
• lytic cycle
• lysogenic cycle
• formation of antibodies

Cell in which a virus reproduces

• endospore
• host cell
• bacteriophage
• plasmid

Which statement is TRUE about virus reproduction?

• Viruses can reproduce on their own
• Viruses need a host cell to reproduce
• Viruses live in host cells, but do not use their machinery to reproduce

What happens in the lytic cyle?

• the virus attaches to the host cell and then leaves

• the virus kills the host cell

• the virus attaches to the host cell injects DNA as the virus leaves it kills the host cell

• the virus attaches to the host cells and as it leaves it kills the host cell