12 Questions
Which type of membrane structure is characteristic of Archaea?
Bilayer membrane with ether bonds
What type of lipid is specific to Eukaryotic plasma membranes?
Sterols
What is a distinguishing feature of Gram-positive bacterial cell walls?
Thicker layer of peptidoglycan
Which component anchors the cell wall to the plasma membrane in Gram-positive bacteria?
Liptechtoic acid
What is the bond that connects the tail to the head in Archaeal phospholipids?
Ether bond
Why do Mycoplasma Spp. not require a cell wall?
Because they reside inside a host
What is the role of Braun’s lipoproteins in bacterial cell walls?
Anchoring different layers together
Which enzyme is responsible for the formation of crosslinking in the bacterial cell wall?
DD-transpeptidase
What differentiates Gram-positive cell walls from Gram-negative cell walls in Gram staining?
Thickness of the cell wall
What is the function of lipid A in Lipopolysaccharide (LPS) found in Gram-negative cells?
Anchoring the LPS
What happens when there is a release of LPS in the body, leading to septic shock?
Body wide vasodilation and sudden drop in blood pressure
What unique feature is present in pseudopeptidoglycan that makes it resistant to lysozymes?
Beta-1,3-glycosidic bonds
Explore the differences in plasma membrane structures between bacteria and archaea, including the composition of phospholipid bilayers and unique lipid bonds. Learn about the presence of hopanoids in bacterial membranes and the variations in membrane strength in archaea.
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