Cell Membrane As Level

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| By Suave444
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Suave444
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Quizzes Created: 2 | Total Attempts: 791
Questions: 5 | Attempts: 336

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Cell Membrane Quizzes & Trivia

Questions and Answers
  • 1. 

    Why id Plasma membrane is called "Fluid" mosaic model?

    • A.

      Because of cholesterol present in it.

    • B.

      Because the substance in the membrane are free to move,

    • C.

      Because phospholipids are made up of water.

    • D.

      Beacuse its been named after the scientist

    Correct Answer
    B. Because the substance in the membrane are free to move,
    Explanation
    The plasma membrane is called the "Fluid" mosaic model because the substances within the membrane are free to move. This means that the lipids and proteins in the membrane can move laterally within the bilayer, giving it a fluid-like characteristic. The mosaic part of the name refers to the diverse arrangement of proteins and lipids in the membrane, forming a mosaic pattern. The presence of cholesterol in the membrane helps maintain its fluidity by preventing the lipids from packing too closely together.

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  • 2. 

    Which part of the cell membrane water uses to enter?

    • A.

      Gylcoprotein

    • B.

      Channel proteins

    • C.

      Phospholipids

    • D.

      Carries proteins

    Correct Answer
    C. Phospholipids
    Explanation
    Water enters the cell membrane through the phospholipids. Phospholipids are the main components of the cell membrane and they form a bilayer structure. This bilayer has a hydrophobic interior, which repels water, and a hydrophilic exterior, which attracts water. The hydrophilic heads of the phospholipids interact with water molecules, allowing water to pass through the membrane. Therefore, the phospholipids provide a pathway for water to enter the cell membrane.

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  • 3. 

    What is the functions of glycoproteins/lipids?

    • A.

      Removes the waste

    • B.

      Helps in osmosis

    • C.

      Act as a hormone

    • D.

      Act as a recepter

    • E.

      Act as a chemical messenger

    Correct Answer
    D. Act as a recepter
    Explanation
    Glycoproteins/lipids act as receptors in various cellular processes. Receptors are proteins or molecules on the cell surface that bind to specific molecules, such as hormones or chemical messengers, to initiate a response within the cell. By acting as receptors, glycoproteins/lipids facilitate signal transduction, allowing cells to respond to external stimuli and regulate various physiological processes. They play a crucial role in cell communication, coordinating cellular activities, and maintaining homeostasis.

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  • 4. 

    At is the function of recepters ( glycoprotein/lipids)?

    • A.

      They controls the blood level

    • B.

      They control the movement of molecules into the cell

    • C.

      They help the cell to communicate with the other cells

    • D.

      Eat bacterias,

    Correct Answer
    C. They help the cell to communicate with the other cells
    Explanation
    Receptors, whether glycoproteins or lipids, play a crucial role in cell communication. They are responsible for receiving signals from other cells or the external environment and transmitting these signals into the cell. This communication allows cells to coordinate their activities, respond to changes in their environment, and maintain homeostasis. Therefore, the correct answer is that receptors help the cell to communicate with other cells.

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  • 5. 

    What is attached to the proteins or lipids to make glycoprotein or glycolipid?

    • A.

      Fatty acids

    • B.

      Carbohydrates

    • C.

      Amino acids

    • D.

      Proteins

    Correct Answer
    B. Carbohydrates
    Explanation
    Carbohydrates are attached to proteins or lipids to form glycoproteins or glycolipids. This process is called glycosylation. Carbohydrates play important roles in cell recognition, cell signaling, and immune response. They can act as markers on the cell surface, allowing cells to interact and communicate with each other. Glycoproteins and glycolipids are found in various biological processes, such as cell adhesion, cell membrane stability, and protein folding. Therefore, carbohydrates are the correct answer for this question.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 18, 2011
    Quiz Created by
    Suave444
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