Ch. 3 The Cellular Level of Organization: Plasma Membrane Structure
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Ch. 3 The Cellular Level of Organization: Plasma Membrane Structure

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Questions and Answers

What is the process by which extracellular materials are packaged in vesicles at the cell surface and imported into the cell?

  • Endocytosis (correct)
  • Pinocytosis
  • Phagocytosis
  • Exocytosis

    • Which process brings solid materials from outside the cell into the cell?

  • Mitosis
  • Endocytosis (correct)
  • Pinocytosis
  • Exocytosis

    • What is the term for the process of vesicle content being released into the extracellular environment?

  • Pinocytosis
  • Phagocytosis
  • Exocytosis (correct)
  • Endocytosis

    • Which phase of the cell cycle involves the duplication of chromosomes?

    <p>S phase</p> Signup and view all the answers

    What is the term for the process of distribution of two sets of chromosomes during cell division?

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

    Which term refers to the ability of cancerous cells to spread to other parts of the body?

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

    Which organelle is responsible for producing energy to carry out the functions of life?

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

    What is the primary function of smooth endoplasmic reticulum in liver cells?

    <p>Inactivate or detoxify lipid-soluble drugs</p> Signup and view all the answers

    What is the main role of cilia in the respiratory and reproductive systems?

    <p>Move fluids or secretions across the cell surface</p> Signup and view all the answers

    What happens to the nerve cells in Tay-Sachs disease due to the lack of a specific enzyme?

    <p>They produce excessive ganglioside</p> Signup and view all the answers

    What is the function of proteasomes in the cell?

    <p>Remove unneeded, damaged, or faulty proteins</p> Signup and view all the answers

    Which organelle generates hydrogen peroxide and has an enzyme called catalase to protect the cell from the damaging effects of free radicals?

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

    What is the principal function of the Golgi apparatus?

    <p>Process, sort, and deliver proteins and lipids</p> Signup and view all the answers

    Which organelle contains digestive enzymes for breaking down organic polymers?

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

    What is the composition of cytosol, also known as intracellular fluid?

    <p>Mainly water, plus proteins, carbohydrates, lipids, and inorganic substances</p> Signup and view all the answers

    What is the basic framework of the plasma membrane made up of?

    <p>Phospholipids, cholesterol, and glycolipids</p> Signup and view all the answers

    Which part of the cell structure makes up 55 percent of the weight of the plasma membrane?

    <p>Membrane proteins</p> Signup and view all the answers

    What is the function of recognition proteins in the cell?

    <p>Help cells recognize and respond to specific molecules in their environment</p> Signup and view all the answers

    What is the role of carrier proteins in the cell?

    <p>Binds solutes and transports them across the plasma membrane</p> Signup and view all the answers

    What structure helps determine cell shape and function in intracellular transport of organelles?

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

    During cell division, which structure aids in the formation of the spindle apparatus needed for movement of chromosomes?

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

    What is the function of microfilaments in a cell?

    <p>Aid in movement and mechanical support</p> Signup and view all the answers

    What is the main function of ribosomes in a cell?

    <p>Responsible for protein synthesis</p> Signup and view all the answers

    What is the primary function of lysosomes within a cell?

    <p>Destroy bacteria and cleanup inside the cell</p> Signup and view all the answers

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