When Biological Membranes Are Frozen and Then Fractured,they Tend to Break

question 6

Multiple Choice

When biological membranes are frozen and then fractured,they tend to break along the middle of the bilayer.The best explanation for this is that

• A)the integral membrane proteins are not strong enough to hold the bilayer together.
• B)water that is present in the middle of the bilayer freezes and is easily fractured.
• C)the hydrophobic interactions between ends of the fatty acid tails of the two phospholipid monolayers are the weakest interactions in the membrane.
• D)the carbon-carbon bonds of the phospholipid tails are easily broken.

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