How Are Integral Membrane Proteins Thought to Enter the Lipid

question 94

Multiple Choice

How are integral membrane proteins thought to enter the lipid bilayer?

• A)They insert into the membrane from the RER lumen after their synthesis is complete.
• B)The aqueous translocon channel seems to have a gate that continuously opens and closes,giving each nascent polypeptide segment a chance to partition itself into the lipid bilayer's hydrophobic core.
• C)They insert into the membrane from the cytosol after their synthesis is complete.
• D)It is thought that they burrow into the lipid bilayer.
• E)It is thought that they are enzymatically implanted in the lipid bilayer.

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Definitions:

Period Costs

Costs that are expensed in the period they're incurred, not directly tied to production activity, such as selling and administrative expenses.

Direct Materials

Raw materials that can be directly attributed to the production of specific goods or services in manufacturing.

Direct Labor

The wages and benefits paid to workers who are directly involved in the production of goods or services.

Prime Costs

The combined costs of direct materials and direct labor that are directly involved in the production of goods.