Which of the following structures are external to both Bacterial and Archaeal cells?

Question

Quizplus · Accepted Answer

Ribosomes, pili, and peptidoglycan are all found in bacterial cells. Archaeal cells have distinct ribosomes and do not have peptidoglycan or pili. Hami, on the other hand, are unique structures found only in certain species of archaea that extend outside of the cell and are used for attachment to surfaces. Therefore, hamis are external to both bacterial and archaeal cells.

Which of the Following Structures Are External to Both Bacterial