The Biconcave Shape of Erythrocytes Which Maximizes Rapid Diffusion of Oxygen

question 23

Multiple Choice

The biconcave shape of erythrocytes which maximizes rapid diffusion of oxygen is primarily maintained by

• A)the covalent attachment of organelles within the cell to the membrane.
• B)high levels of rigid cholesterol and saturated lipids that strengthen the membrane.
• C)a network of embedded spectrin that crosslink to other membrane proteins,
• D)a network of tightly-packed anion channel proteins.
• E)a relatively low concentration of integral membrane proteins allowing tighter packing of lipid molecules within the membrane.

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