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The Fundamental Unit of Life Test - 15

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The Fundamental Unit of Life Test - 15
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Use the following information to answer the next question.

    Energy is required to perform all activities of the body. This energy is produced by a cell.

    The cell organelle that produces energy is the

    Solution

    The mitochondrion is the power house of a cell. It is the cell organelle that produces energy.

    The correct answer is B.

    Why alternative A, C and D are wrong:

    The cell membrane, Golgi bodies, and nucleus are not involved in the production of cellular energy. Hence, alternatives A, C, and D are incorrect.

  • Question 2
    1 / -0

    Use the following information to answer the next question.

    Leaf cells perform photosynthesis, which results in the production of food.

    In leaf cells, photosynthesis is carried out by the

    Solution

    Photosynthesis is carried out in leaf cells by the chloroplast.

    The correct answer is B.

    Why alternative A, C and D are wrong:

    The mitochondria, lysosomes, and ribosomes do not perform photosynthesis. Hence, alternatives, A, C, and D are incorrect.

  • Question 3
    1 / -0

    Removal of old cell organelles is necessary for the proper functioning of a cell. The old cell organelles are removed by the

    Solution

    The lysosome contains digestive enzymes that digest old cell organelles inside the cell. Hence, old cell organelles are removed by the lysosome.

    The correct answer is C.

    Why alternative A is wrong:

    The cell membrane acts as a protective layer of the cell that holds the cytoplasm.

    Why alternative B is wrong:

    The mitochondria are the cell organelles that produce energy inside a cell.

    Why alternative D is wrong:

    The cell wall protects a cell from physical injury.

  • Question 4
    1 / -0

    All plant cells possess a cell wall. The cell wall of a plant cell performs the function of

    Solution

    The cell wall protects the plant cell from physical injury.

    The correct answer is B.

    Why alternative A is wrong:

    The cell wall does not perform the function of digestion. The digestion of food and the production of energy occur in the mitochondria.

    Why alternative C is wrong:

    The cell wall does not perform the function of food production. The chloroplasts produce food in a plant.

    Why alternative D is wrong:

    The mitochondria are involved in the production of energy in a cell.

  • Question 5
    1 / -0

    Use the following information to answer the next question.

    Organisms that are made up of many cells are called multi-cellular organisms; whereas organisms that are made up of only a single cell that performs all functions are called unicellular organisms.

    Which of the following organisms is unicellular?

    Solution

    Amoebae are made up of a single cell only. They have different cell organelles that perform different functions necessary for their survival.

    The correct answer is D.

    Why alternative A, B and C are wrong:

    Algae, pine, and sundew are multi-cellular organisms. They have different cells performing different functions. Hence, alternatives A, B, and C are incorrect.

  • Question 6
    1 / -0

    Use the following information to answer the next question.

    Cells form the basic unit of life. Every living thing is made up of cells.

    The basic cell structure is not present in

    Solution

    Viruses do not have cell organelles and the basic cell structure. It is for this reason that they are considered non-living. They are considered living only when they are inside living cells and require these cells to complete their life cycle.

    The correct answer is C.

  • Question 7
    1 / -0

    Use the following information to answer the next question.

    The products synthesized in a cell are transported to the various parts of the cell.

    Within a cell, the function of transportation is carried out by

    Solution

    Endoplasmic reticulum is involved in the transportation of substances within a cell.

    The correct answer is A.

    Why alternative B is wrong:

    Cell membrane takes part in the selective transportation of materials in and out of a cell. Hence, this alternative is incorrect.

    Why alternative C is wrong:

    Mitochondria take part in the production of energy within a cell. Hence, this alternative is incorrect.

    Why alternative D is wrong:

    Centriole takes part in cell division. Hence, this alternative is incorrect.

  • Question 8
    1 / -0

    Use the following information to answer the next question.

    Plant and bacterial cells have cell walls, whereas cell wall is absent in animal cells.

    In plant and bacterial cells, cell walls perform the function of

    Solution

    The cell wall provides protection to plant and bacterial cells from any external injury.

    The correct answer is C.

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