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Plasma Membranes

Quiz by Made Easy Academy

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10 questions
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  • Q1
    Which component of the plasma membrane is primarily responsible for its fluidity and flexibility?
    Nucleic acids
    Carbohydrates
    Phospholipids
    Proteins
    30s
  • Q2
    What is the primary function of cholesterol within the plasma membrane?
    To store genetic information
    To provide structural support
    To act as a channel for ions
    To regulate membrane fluidity
    30s
  • Q3
    Which protein type primarily facilitates the movement of substances across the plasma membrane?
    Transport proteins
    Enzymatic proteins
    Receptor proteins
    Structural proteins
    30s
  • Q4
    What is the term for the movement of water across a selectively permeable membrane?
    Active transport
    Facilitated diffusion
    Diffusion
    Osmosis
    30s
  • Q5
    Which of the following best describes the fluid mosaic model of the plasma membrane?
    A rigid, static structure
    Only composed of lipids
    A flexible combination of phospholipids and proteins
    A single layer of molecules
    30s
  • Q6
    What role do glycoproteins play in the plasma membrane?
    They assist in cell recognition and communication
    They anchor the membrane to the cytoskeleton
    They provide energy for the cell
    They serve as channels for molecules
    30s
  • Q7
    Which process describes the engulfing of large particles by the plasma membrane to form a vesicle?
    Exocytosis
    Pinocytosis
    Receptor-mediated endocytosis
    Phagocytosis
    30s
  • Q8
    What is the primary purpose of the sodium-potassium pump in the plasma membrane?
    To maintain the electrochemical gradient
    To synthesize proteins
    To generate ATP directly
    To facilitate glucose transport
    30s
  • Q9
    What is the function of membrane potential in cells?
    To facilitate protein synthesis
    To store nutrients
    To break down waste products
    To create a voltage difference across the plasma membrane
    30s
  • Q10
    Which type of transport does not require energy to move substances across the plasma membrane?
    Exocytosis
    Passive transport
    Endocytosis
    Active transport
    30s

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