Unit 2 Chapter 1 (1st Secondary) Biology

52 Questions | Total Attempts: 15

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Unit 2 Chapter 1 (1st Secondary) Biology

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Questions and Answers
  • 1. 
    The first to see a cell (a room), and named it a cell. He looked at a cork, saw a line of cells that reminded him of rooms …..
    • A. 

      Had observed the structures only in plant material.

    • B. 

      Deduced that all living organisms bodies are composed of cells.

    • C. 

      Was the second person to see the cell organelles.

    • D. 

      Was the first to observe the world of microscopic organisms and living cells.

  • 2. 
    Which technology was essential for the development of the cell theory?
    • A. 

      Telescopes

    • B. 

      Scientific researches

    • C. 

      Freezing techniques

    • D. 

      Microscopes

  • 3. 
    He advanced the cell theory with his conclusion that cells could only come from other cells. ……
    • A. 

      Antonie Van Leeuwenhoek

    • B. 

      Rudolf Virchow

    • C. 

      Theodor Schwann

    • D. 

      Robert Hook

  • 4. 
    Which is not true for the cellular theory?
    • A. 

      Cells are the basic functional units for all living organisms.

    • B. 

      All living organisms are made up of cells.

    • C. 

      Theodor Schwann is one of the scientists that the theory is credited to.

    • D. 

      Some cells arise spontaneously.

  • 5. 
    The beginning unit is always a cell. It starts then from cells …....
    • A. 

      To tissues, to organs, to systems, to organisms.

    • B. 

      To tissues, to systems, to organs, to organisms.

    • C. 

      To systems, to tissues, to organs, to organisms.

    • D. 

      To organs, to organisms, to tissues, to systems. 

  • 6. 
    Which is true for the cellular theory?
    • A. 

      Cells are similar in shape, structure and size.

    • B. 

      The muscular cell can contract and relax.

    • C. 

      The nerve cell is long to transfer electrical impulses along its axon.

    • D. 

      The cell is the basic unit of life. 

  • 7. 
    Which of the following was done by T. Schwann?
    • A. 

      He said that not all plants are made of cells.

    • B. 

      He said that not all animals are made of cells.

    • C. 

      He stated that all living organisms body are composed of cells.

    • D. 

      He stated that the new cells are produced only by other living cells.

  • 8. 
    What did Leeuwenhoek do?
    • A. 

      Looked at cork cells.

    • B. 

      Stated that animals are made of cells.

    • C. 

      Stated that all plants are made of cells.

    • D. 

      Used simple microscope and saw microorganisms.

  • 9. 
    Which of the following group of scientists contributed to the cell theory?
    • A. 

      Rudolf Virchow, Albert Einstein, Anton van Leeuwenhoek

    • B. 

      Matthias Schleiden, Theodor Schwann, Rudolf Virchow

    • C. 

      Robert Hooke, Charles Darwin, Anton van Leeuwenhoek

    • D. 

      George Carver, Matthias Schleiden, Charlie Sheen

  • 10. 
    Which of the following scientists concluded that all PLANTS are made of cells?
    • A. 

      Matthias Schleiden

    • B. 

      Rudolf Virchow

    • C. 

      Robert Hooke

    • D. 

      Theodor Schwann

  • 11. 
    What is one way in which all living things on Earth are alike?
    • A. 

      All living things have hair.

    • B. 

      All living things are made of cells and come from other cells.

    • C. 

      All cells of all living things have chloroplast.

    • D. 

      All living things can move.

  • 12. 
    Why are microscopes important when studying most cells?
    • A. 

      Most cells are opaque.

    • B. 

      Most cells found in multiple layers.

    • C. 

      Most body cells are not in a direct contact with the external environment

    • D. 

      Most cells are very small.

  • 13. 
    The first man to observe live cells under microscope was …..
    • A. 

      Robert Hooke

    • B. 

      Schleiden

    • C. 

      Leeuwenhoek

    • D. 

      Virchow

  • 14. 
    He placed a slice of cork under his microscope and he called the structure observed as 'cell'. The person mentioned is ….... 
    • A. 

      Antony van Leeuwenhoek

    • B. 

      Matthias Schleiden

    • C. 

      Theodor Schwann

    • D. 

      Robert Hooke

  • 15. 
    All the following statements are true regarding the "cell theory" except .....
    • A. 

      All living things or organisms are made of cells.

    • B. 

      All cells arise spontaneously.

    • C. 

      Cell is the basic structural and functional unit of life.

    • D. 

      All cells arise from preexisting cells. 

  • 16. 
    The smallest unit that can perform the basic activities of life is a(an) …....
    • A. 

      Cell

    • B. 

      Tissue

    • C. 

      Organ

    • D. 

      Organism

  • 17. 
    Which of the following is NOT a premise of cell theory? I. All cells arise from other cells. II. All living cells respire for survival.III. All living organisms are autotrophic. lV. All living organisms are composed of cells.
    • A. 

      I and ll

    • B. 

      Il and lll

    • C. 

      Lll

    • D. 

      IV

  • 18. 
    In order to screen the composition of a large sized objects under light microscope, they have to be sliced into thin slices , …..
    • A. 

      So that the edge of the diaphragm can just be seen at the perimeter of the field of view.

    • B. 

      So that to allow the light to permit through.

    • C. 

      So that to be within the diameter of the field of view.

    • D. 

      So that to bring the specimen clearly into focus.

  • 19. 
    Among the methods innovated by scientists to observe the samples more cleary under light microscope is(are)........
    • A. 

      L. Using dyes to stain certain parts of the sample.

    • B. 

      Ll. Using microscopes with two eyepieces.

    • C. 

      Lll. Changing the level of light.

    • D. 

      LV. (l and lll)

  • 20. 
    Among the disadvantages of using dyes for staining certain parts of the sample is that, dyes …..
    • A. 

      Kill the living sample.

    • B. 

      Prevent light from passing through.

    • C. 

      Affect the focus of the object.

    • D. 

      Affect the resolution of the microscope.

  • 21. 
    In the following figure, what are (A), (B), (C) and (D)?
    • A. 

      A is Robert Hooke’s microscope / B is Leeuwenhoek’s microscope / C is objective lens / D is ocular lens.

    • B. 

      A is Robert Hooke’s microscope / B is Leeuwenhoek’s microscope / C is ocular lens / D is objective lens.

    • C. 

      A is Leeuwenhoek’s microscope / B is Robert Hooke’s microscope / C is objective lens / D is ocular lens.

    • D. 

      A is Leeuwenhoek’s microscope / B is Robert Hooke’s microscope / C is ocular lens / D is objective lens.

  • 22. 
    If SEM refers to scanning electron microscope and TEM refers to transmission electron microscope. The figure below represents pollen grains and white blood cells under each of the SEM and the TEM. What are A1, A2, B1 and B2?
    • A. 

      A1 pollen grains under SEM / A2 pollen grain under TEM / B1 white blood cells under TEM / B2 white blood cell under SEM.

    • B. 

      A1 pollen grains under TEM / A2 pollen grain under SEM / B1 white blood cells under TEM / B2 white blood cell under SEM.

    • C. 

      A1 pollen grains under TEM / A2 pollen grain under SEM / B1 white blood cells under SEM / B2 white blood cell under TEM.

    • D. 

      A1 pollen grains under SEM / A2 pollen grain under TEM / B1 white blood cells under SEM / B2 white blood cell under TEM.

  • 23. 
    SEM (Scanning Electron Microscope) is used to study the surface morphology or the outer surface of the object, TEM (Transmission Electron Microscope) of a higher resolution is used to study the main internal features of the object. A, B and C are pictures for red blood cells taken under three types of microscopes.Relate each picture to its corresponding microscope.
    • A. 

      A under SEM / B under TEM / C under light microscope.

    • B. 

      A under light microscope / B under SEM / C under TEM.

    • C. 

      A under light microscope / B under TEM / C under SEM.

    • D. 

      A under TEM / B under SEM / C under light microscope.

  • 24. 
    In the comparison between light microscope (L.M) and electron microscope (E.M), one of the following comparisons is wrong ……
    • A. 

      L.M depends on light / E.M depends upon a beam of high speed electrons.

    • B. 

      L.M has glass lenses / E.M have electromagnetic lenses.

    • C. 

      L.M has a maximum magnification power of 1500 times / E.M has a magnification power about one million times.

    • D. 

      The electron ray has a longer wave length than the light ray.

  • 25. 
    What happens to the image of the light microscope if the ocular lens is 10X and the objective lens is 50X …….
    • A. 

      It will be magnified 500 times.

    • B. 

      It will be magnified 60 times.

    • C. 

      It will be magnified 5000 times.

    • D. 

      It will be unclear. 

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