THE CELL
TRANSPORT INTO AND OUT OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It allows things to freely enter and exit the cell
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it controls which substances enter and exit the cell
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it prevents substances from entering the cell
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it prevents substances from leaving the cell
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Detailed explanation-1: -Answer and Explanation: The main function of the cell membrane are to ensure to control the substances that are moving in and out of the cell.
Detailed explanation-2: -The correct answer is (C) A flexible lipid double layer. The cell membrane is often referred to as a “fluid mosaic, ” a flexible structure containing phospholipids as well as some proteins and other important molecules.
Detailed explanation-3: -The cell membrane is also called the plasma membrane. It provides protection for the cell and its cellular components from the external environment. It is selectively permeable and regulates the movement of molecules in and out of the cell.
Detailed explanation-4: -The cell membrane controls what goes in and out by having protein channels that act like funnels in some cases and pumps in other cases. Passive transport does not require energy molecules and happens when a funnel opens in the membrane, letting molecules flow through.