Archaea, Bacteria and Viruses

Prokaryotes are organisms that ...

• Have a nucleus
• usually multi-celled.
• both of these
•   none of these.

Almost all archaea have cell walls.

• true
• false

What type of organism can be found in extreme environments such as hot springs?

• viruses
• archaea 
• eukaryotes
• None of these

How does a virus use a host to reproduce?

• The virus only uses a host cell for shelter; it does not use a host cell to reproduce.
• The host cell only provides the virus with the food it needs to reproduce on its own.
• The virus can replicate its own genetic material, but it uses the host for the process of conjugation.
• The host cell provides the virus with resources and shelter; its proteins replicate the genetic material of the virus.

How does the process of binary fission work in the asexual reproduction of bacteria?

• Two cells join to become one larger cell. 
• One cell splits into two cells with identical DNA. 
• DNA material from the environment is added to the cell.
• Bacteria can only reproduce via sexual reproduction, not asexual reproduction.

The shape of bacteria help them ....

• move
• eat
• protect themselves
• all of the above

Bacteria that are producers ....

• make their own food.
• feed on other organisms
• feed on dead organisms
• none of these

Bacteria that are consumers ....

• make their own food.
• feed on other organisms
• feed on dead organisms
• none of these

Bacteria that are decomposers ....

• make their own food.
• feed on other organisms
• feed on dead organisms
• none of these

Bacteria can form ________ to protect itself from harsh conditions.

• endospores
• armor
• spores
• mushrooms