Cell Biology Quiz
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Questions and Answers

What is the primary role of the cell membrane in cell function?

  • Providing structural support to the cell
  • Facilitating cellular respiration
  • Regulating the movement of materials in and out of the cell (correct)
  • Synthesizing proteins within the cell
  • Which organelle is present in the plant cell but not the animal cell?

  • Endoplasmic reticulum, Ribosome
  • Chloroplast, Lysosome
  • Vacuole, Endoplasmic reticulum
  • Chloroplast, Golgi apparatus (correct)
  • What is the function of the vacuole in a plant cell?

  • Synthesis of lipids and steroids
  • Storage of water, nutrients, and waste products (correct)
  • Protein modification and sorting
  • Generation of energy through cellular respiration
  • According to the Kinetic Particle Theory, which state of matter has particles with fixed shape and volume?

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

    In which state of matter do particles have an irregular arrangement and are very far apart?

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

    In which form of passive transport do materials move without the need of energy due to differences in concentration?

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

    Which medium allows the fastest diffusion of molecules?

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

    Will diffusion be faster when the medium is hot or cool?

    <p>Hot, because particles move faster at higher temperatures</p> Signup and view all the answers

    What is the movement of water molecules from a region of higher water concentration to a region of lower water concentration through a selectively permeable membrane called?

    <p>$ ext{Osmosis}$</p> Signup and view all the answers

    $ ext{Facilitated diffusion}$ allows small molecules like oxygen, carbon dioxide, and water to freely diffuse across cell membranes, while larger molecules like sugar require:

    <p>Active transport to cross the membrane</p> Signup and view all the answers

    What type of transport requires cells to use up energy to move molecules across the cell membrane against the natural concentration gradient?

    <p>Active transport</p> Signup and view all the answers

    What process involves materials being too large to cross the cell membrane and therefore moving into or out of the cell by forming vesicles?

    <p>Endocytosis and exocytosis</p> Signup and view all the answers

    Which substances are moved in and out of cells by active transport?

    <p>Calcium, potassium, and sodium</p> Signup and view all the answers

    What happens when the environment is dry with very little water for cells?

    <p>Water may move out of cells causing cytoplasm to shrink away from the cell wall leading to cell death</p> Signup and view all the answers

    What are the 4 functions of cell division?

    <p>Repair injured body parts</p> Signup and view all the answers

    Which structures in the cell help it to reproduce?

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

    During which stage of mitosis do fibers of the centrioles pull the chromatids apart into each side of the cell?

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

    What happens during interphase in preparation for cell division?

    <p>Cell grows and produces organelles needed by both daughter cells</p> Signup and view all the answers

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