Textbook Question
Archaea cell walls tend to contain:
a. Lipid bilayers.
b. Pseudopeptidoglycan.
c. Cholesterol.
d. Flagellin.
e. Peptidoglycan.
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1. Introduction to Microbiology
Introduction to Archaea
Multiple Choice
Which of the following correctly describes a characteristic of archaeal cells?
A
Their membranes contain ester-linked phospholipids.
B
Their cell walls lack peptidoglycan.
C
They have membrane-bound organelles.
D
They are classified as eukaryotes.
Verified step by step guidance1
Step 1: Understand the basic classification of archaeal cells. Archaea are a distinct domain of life, separate from bacteria and eukaryotes.
Step 2: Review the composition of archaeal cell membranes. Unlike bacteria, archaeal membranes contain ether-linked phospholipids, not ester-linked ones.
Step 3: Examine the cell wall structure of archaea. Archaeal cell walls do not contain peptidoglycan, which is a key component of bacterial cell walls.
Step 4: Consider the presence of membrane-bound organelles. Archaea, like bacteria, lack membrane-bound organelles, which are characteristic of eukaryotic cells.
Step 5: Confirm the classification of archaea. They are prokaryotes, not eukaryotes, despite some similarities to eukaryotic cells.
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