Exploring the Three Domains of Life

How many major domains are used to classify all organisms on Earth?

• Two

• Five

• Four

• Three

Which domains consist only of unicellular organisms?

• Eukarya and Protists

• Bacteria and Eukarya

• Archaea and Eukarya

• Bacteria and Archaea

What is unique about the cell walls of bacteria?

• They contain peptidoglycan

• They lack peptidoglycan

• They contain isoprene chains

• They are made of cellulose

Which domain's plasma membrane uses isoprene chains?

• Bacteria

• Archaea

• Protists

• Eukarya

What distinguishes the enzymes that read the genetic code in Archaea from those in Bacteria?

• Bacteria's enzymes are more complex

• Archaea's enzymes are different

• Archaea use simpler enzymes

• They are essentially the same

Which statement is true about Archaea?

• They are mostly found in mild environments

• No Archaea has been found to cause disease in humans

• They cannot survive in hot springs

• They have been found to cause diseases in humans

What kind of environments can Archaea survive in?

• Underwater only

• Extremely harsh environments

• Moderate environments

• Deserts only

Which domain includes both unicellular and multicellular organisms?

• Protists

• Eukarya

• Archaea

• Bacteria

Tags

NGSS.MS-LS4-2

Which domain's cells have a nucleus?

• Bacteria

• Both Bacteria and Archaea

• Eukarya

• Archaea

What is not a kingdom within the Eukarya domain?

• Bacteria

• Fungi

• Protists

• Plants