Cells and Viruses

Why do scientists classify viruses as non-living?

• They DO respond to a stimulus
• They need a host's energy because they do not have their own energy 
• They produce wastes
• They are really small 

Which is bigger, a bacteria or a virus?

• Bacteria
• Virus

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

Which can be treated with antibiotics?

• Virus
• Bacteria
• Mutagen
• Parasite

A(n) _____ is a virus that enters a bacterial cell.

• endospore
• decomposer
• plasmid
• bacteriophage

Which of the following occurs after a virus attaches to a host cell

• The host cell dies
• The virus dies
• The virus inserts its genetic information into the host cell
• the virus eats the cell

Viruses can reproduce on their own

• False
• True

Viruses 

• have many cells
• are misfolded proteins
• are a protein coat around genetic material
• endospores

All cells are either prokaryotic or eukaryotic.

• true
• false

Which of the following is one important difference between a virus and a bacterial cell?

• a virus is much larger in size than a bacterial cell
• a virus always causes more severe disease than a bacterial cell
• a virus can never reproduce on its own, but a bacterial cell can
• a virus does not contain genetic material, but a bacterial cell does