Cell Biology Basics Quiz
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The plasma membrane is a flexible barrier that surrounds and contains the cytoplasm of a cell, is best described by using a structural model called the ______

fluid mosaic model

The plasma membrane is a selective barrier that regulates the flow of materials into and out of a cell. This selectivity helps establish and maintain the appropriate environment for normal cellular activities. The plasma membrane also plays a key role in communication among cells and between cells and ______

their external environment

The membrane lipids allow passage of several types of lipid-soluble molecules but act as a barrier to the entry or exit of charged or polar substances. Some of the proteins in the plasma membrane allow movement of ______

polar

The plasma membrane is a selective barrier that regulates the flow of materials into and out of a cell. This selectivity helps establish and maintain the appropriate environment for normal cellular activities. The plasma membrane also plays a key role in communication among ______

<p>cells</p> Signup and view all the answers

The plasma membrane is a flexible barrier that surrounds and contains the cytoplasm of a cell, is best described by using a structural model called the fluid ______

<p>mosaic model</p> Signup and view all the answers

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