Bacteria and Viruses

Is a virus considered living or non-living?

• Living
• Non-Living
• Neither

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 

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 make proteins
• all of the above

How does a virus cause a person to develop the common cold?

• invades the host cell to reproduce
• removes energy from the host cell
• produces toxins in the host cell
• protects the host cell from bacteria

Are larger in size

• Viruses

• Bacteria

• Both viruses and bacteria

Bacteria are prokaryotes which means they

• have a nucleus on their capsule
• do not contain a nucleus
• can live in environments with and without oxygen

which of those statement is true?

• All bacteria have a nucleus.

• All bacteria make you sick.

• All bacteria are unicellular.

• All virus are bacteria.

What structure is used for movement?

• ribosomes
• cytoplasm
• flagella

True or False:
Bacteria is found almost everywhere.

• True
• False