Answer:
The correct answer is option a.
Explanation:
When the process of hydrolysis moves towards the tip of the microtubule, it starts brisk depolymerization and shrinkage. The addition of GTP-bound tubulin to the tip of the microtubule again offers a new cap and protects the microtubule from shrinking.
The addition of a drug prevents GTP exchange on free tubulin dimers, that is, the drug, which prevents GTP exchange on free tubulin dimers will efficiently minimize the availability of the pool of GTP-bound tubulin dimers for addition to microtubule terminals. Thus, favoring microtubule disassembly or microtubule shrinkage.
Answer:
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<u>Answer</u>: C) Hydrophobic interior, hydrophilic exterior
<u>Explanation</u>:
- The <em>plasma membrane</em> of the cell defines its boundary and separates its internal components from the external environment.
- The basic components of the plasma membrane include phospholipids, carbohydrates, proteins, and cholesterol.
- The plasma membrane is a phospholipid bilayer, with <em>hydrophobic</em> tails of the phospholipid projecting <em>inwards</em> and the <em>hydrophilic</em> exterior in contact with the external environment.
- <em>Due to this, the plasma membrane has a hydrophobic interior and hydrophilic exterior. </em>