Question

archaea
multiple choice
○ are most genetically related to bacteria.
○ lack peptidoglycan in their cell walls.
○ contain a nucleus.
○ cannot cause disease in humans.

Explanation:

To solve this, we analyze each option:

• "are most genetically related to bacteria": Archaea are more related to eukaryotes than bacteria, so this is wrong.
• "lack peptidoglycan in their cell walls": Bacteria have peptidoglycan in cell walls, but Archaea lack it. This is correct.
• "contain a nucleus": Archaea are prokaryotes, so they don't have a nucleus. Wrong.
• "cannot cause disease in humans": Some Archaea can be associated with human diseases (though rare), so this is incorrect.

Answer:

The correct option is the second one: "lack peptidoglycan in their cell walls." (The option with the text "lack peptidoglycan in their cell walls" and the second radio button from the top)