Marcello Malpighi and the Discovery of Capillaries
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Questions and Answers

What did Marcello Malpighi observe in the lung tissues of frogs?

  • A network of thin, hair-like structures
  • A complex system of blood vessels
  • An intricate web of microscopic vessels
  • A network of capillaries connecting arteries and veins (correct)

    • What is the main difference between a compound light microscope and an electron microscope?

  • Magnification levels (correct)
  • Light source
  • Lens system
  • Resolution

    • How can the organization of cells be compared to?

  • Specialized structures
  • Living factories (correct)
  • Biological systems
  • Microscopic organisms

    • What do unicellular organisms consist of?

    <p>Only a single cell</p> Signup and view all the answers

    What term was used to describe the blood vessels observed by Marcello Malpighi in frog lung tissues?

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

    Which process involves the movement of particles from an area of higher concentration to an area of lower concentration?

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

    What structures do paramecia use to move swiftly through freshwater?

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

    What single-celled organism captures food using pseudopods?

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

    Which unicellular organism is covered in hair-like structures called cilia?

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

    In which type of organism does diffusion occur in all cells?

    <p>Unicellular organisms</p> Signup and view all the answers

    What is the function of the cell membrane?

    <p>To selectively allow some particles to pass through</p> Signup and view all the answers

    How does osmosis differ from diffusion?

    <p>Osmosis involves the movement of water particles across a selectively permeable membrane</p> Signup and view all the answers

    What happens if the water concentration inside a cell gets too low?

    <p>Water diffuses into the cell</p> Signup and view all the answers

    What is the outcome of placing a blood cell in a hypertonic solution?

    <p>The blood cell shrinks due to water moving out of the cell</p> Signup and view all the answers

    What happens when a cell is placed in almost pure water?

    <p>The cell swells due to water moving into the cell by osmosis</p> Signup and view all the answers

    What is the function of a selectively permeable membrane in a cell?

    <p>It allows only specific substances in and out of the cell.</p> Signup and view all the answers

    Explain the concept of isotonic condition in relation to water concentration inside and outside a cell.

    <p>The concentration of water in and out of the cell is the same, resulting in a well-balanced cell.</p> Signup and view all the answers

    In the context of osmosis, what happens to a cell when placed in a hypertonic solution?

    <p>Water moves out of the cell, causing it to shrink, and the cell can potentially die.</p> Signup and view all the answers

    What is the potential outcome when a cell is placed in almost pure water in terms of osmosis?

    <p>The water moves into the cell, causing it to swell, and the cell can potentially explode.</p> Signup and view all the answers

    How does osmosis relate to the maintenance of water concentration inside a cell?

    <p>Osmosis ensures that the amount of water inside a cell stays fairly constant by balancing water movement based on concentration.</p> Signup and view all the answers

    Which process allows particles to move from an area of higher concentration to an area of lower concentration in all cells?

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

    What is the function of cilia in paramecia?

    <p>Moving through water</p> Signup and view all the answers

    How do amoebas capture food?

    <p>Engulfing it between pseudopods</p> Signup and view all the answers

    What is the main difference between yeast and multicellular organisms?

    <p>Cell structure</p> Signup and view all the answers

    What is the function of a selectively permeable membrane in a cell?

    <p>Allowing only certain substances to enter or leave the cell</p> Signup and view all the answers

    What is the potential outcome when a cell is placed in almost pure water in terms of osmosis?

    <p>Hypotonic solution</p> Signup and view all the answers

    What is the function of the compound lens system in a compound light microscope?

    <p>To provide high magnification by multiplying the objective and eyepiece lenses</p> Signup and view all the answers

    What term was used to describe the blood vessels observed by Marcello Malpighi in frog lung tissues?

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

    In which type of organism are most microscopic organisms, such as mycoplasma, categorized?

    <p>Unicellular organisms</p> Signup and view all the answers

    Which microscope has a maximum magnification of up to 2,000,000 times?

    <p>Electronic microscope</p> Signup and view all the answers

    How are the specialized structures within cells, known as organelles, compared to?

    <p>Factories making all the necessary things for cells to live</p> Signup and view all the answers

    What was the technological device that revolutionized our understanding of life and living things in the early 1600s?

    <p>Compound Light Microscope</p> Signup and view all the answers

    What is the function of a selectively permeable membrane in a cell?

    <p>To regulate the movement of specific substances into and out of the cell</p> Signup and view all the answers

    How is osmosis related to the maintenance of water concentration inside a cell?

    <p>Osmosis causes the water concentration inside the cell to stay fairly constant</p> Signup and view all the answers

    What happens to a cell when placed in a hypertonic solution?

    <p>The cell releases water and shrinks</p> Signup and view all the answers

    In isotonic conditions, what characterizes the water concentration inside and outside a cell?

    <p>The water concentration inside and outside the cell is the same</p> Signup and view all the answers

    What is the outcome of placing a blood cell in a hypotonic solution?

    <p>The cell absorbs water and swells</p> Signup and view all the answers

    How does osmosis differ from simple diffusion?

    <p>Osmosis is specific to the movement of water, while simple diffusion applies to all substances</p> Signup and view all the answers

    What term describes cells that are well balanced in terms of water concentration?

    <p>Isotonic cells</p> Signup and view all the answers

    Which process involves particles moving from an area of lower concentration to an area of higher concentration?

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

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