Lesson 3 - Viruses - Post Quiz

Is a virus considered living or non-living?

• Living
• Non-Living
• Neither

Reasons that viruses are considered to be nonliving is because

• They are not cellular
• They cannot reproduce on their own
• They cannot make proteins
• all of the above

Viruses are...

• prokaryotic
• eukaryotic
• non-living
• endospores

What do all viruses need to reproduce?

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

When a virus invades a living cell, its _______
takes over the cell's functions.

• outer coat
• genetic material
• core
• cytoplasm

What do viruses have in common with living cells? They both

• store genetic information
• have chloroplasts
• use glucose for cellular respiration
• have endoplasmic reticula

A capsid is

• a structure that directly causes cell lysis
• the type of virus that attacks bacteria
• the genetic material of a virus
• the protein coat of a virus

The genetic material of a virus is in the form of

• RNA
• DNA
• either RNA or DNA

What is the basic structure of a virus?

• DNA or RNA surrounded by a protein coat.

• a capsid surrounded by a protein coat.

• a tail sheath surrounded by tail

• a tiny cell surrounded by a cell.

Which occurs during the lysogenic cycle of a virus infection?

• Viral genes instruct the host cell to make more viral protein capsids and enzymes needed for viral replication.

• The virus produces active, immediate infections.

• The virus takes over the cell, makes copies of itself, and usually kills the host cell.

• The viral genes become a part of the host cell DNA, so the cell continually makes more copies of the virus.