When Biological Membranes Are Frozen and Then Fractured, They Tend

question 61

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) hydrophilic interactions between the opposite membrane surfaces are destroyed on freezing.
• D) the carbon-carbon bonds of the phospholipid tails are easily broken.
• E) the hydrophobic interactions that hold the membrane together are weakest at this point.

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Definitions:

Total Manufacturing Costs

This encompasses all the direct materials, direct labor, and factory overhead costs involved in producing goods.

Units Transferred Out

In cost accounting, it refers to the number of units moved from one production process to the next or to the finished goods inventory.

Ending Work In Process

This signifies the inventory of goods that are still in the process of being produced at the end of an accounting period.

Conversion Costs

Costs incurred during the transformation of raw materials into finished goods, typically including labor and overhead expenses.