Archaea

Archaea, once thought to be primitive bacteria, are now recognized as a distinct domain. Initially discovered as extremophiles in harsh environments, their biochemistry and genetics are more similar to eukaryotes than to bacteria.

How are Archaea classified in relation to bacteria?

• As a type of virus

• As a subclass of eukaryotes

• As a separate domain

• As a type of bacteria

What environments were Archaea first associated with?

• Rainforests

• Deserts

• Salt lakes and hot springs

• Tundras

Which of the following is true about the initial discovery of Archaea?

• They were believed to be a type of algae

• They were considered primitive bacteria

• They were classified as fungi

• They were thought to be a type of plant

How does the genetic makeup of Archaea compare to other organisms?

• It is more similar to eukaryotes

• It is completely unique

• It is more similar to bacteria

• It is identical to viruses

What recent discovery has been made about Archaea?

• They are a type of bacteria

• Their biochemistry is similar to eukaryotes

• They are not living organisms

• They are more closely related to plants