Year 8 Cells And Organisation - Mr. Hung 2014

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| By Edward Hung
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Edward Hung
Community Contributor
Quizzes Created: 15 | Total Attempts: 58,436
Questions: 10 | Attempts: 681

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Year 8 Cells And Organisation - Mr. Hung 2014 - Quiz

A quiz for cells & tissues.


Questions and Answers
  • 1. 

    Which are the building blocks of us?

    • A.

      Tissues

    • B.

      Organs

    • C.

      Cells

    • D.

      Systems

    Correct Answer
    C. Cells
    Explanation
    Level of Organisation
    cells --> tissues --> Organs --> Systems --> Organism

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  • 2. 

    Which organelle is NOT found in animal cells?

    • A.

      Chloroplast

    • B.

      Cell membrane

    • C.

      Nucleus

    • D.

      Cytoplasm

    Correct Answer
    A. Chloroplast
    Explanation
    A plant cell has extra structures: cell wall, large vacuole and chloroplasts

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  • 3. 

    The image shows some ___________ cells.

    • A.

      Red blood cells

    • B.

      Nerve cells

    • C.

      Muscle cells

    • D.

      Cheek cells

    Correct Answer
    D. Cheek cells
    Explanation
    Red blood cell is red without a nucleus. Nerves cell is elongated with extensions, muscle cell is long and pointed at the ends.

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  • 4. 

    Chloroplasts can't be found in cells of

    • A.

      Leaves

    • B.

      Roots

    • C.

      Green stems

    • D.

      Flower buds

    Correct Answer
    B. Roots
    Explanation
    Chloroplasts are organelles found in green parts of the plants. Chloroplasts actually consist of a green pigment called Chlorophyll that is important for the plant to make its own food by Photosynthesis. Roots are underground and they are not exposed to Sunlight.

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  • 5. 

    Which structure is responsible for controlling substances to come in or go out?

    • A.

      Nucleus

    • B.

      Cytoplasm

    • C.

      Cell membrane

    • D.

      Vacuole

    Correct Answer
    C. Cell membrane
    Explanation
    The cell membrane is responsible for controlling substances to come in or go out of the cell. It acts as a barrier, allowing only certain substances to pass through while blocking others. This selective permeability ensures that the cell maintains its internal environment and regulates the movement of molecules and ions in and out of the cell.

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  • 6. 

    The following is a photomicrograph of young root. What can you see in these root cells?

    • A.

      Mitosis

    • B.

      Meiosis

    • C.

      Formation of pollens

    • D.

      Death of cells

    Correct Answer
    A. Mitosis
    Explanation
    The darker structures are chromosomes. There are various stages of cell division - mitosis.
    Meiosis is a cell division for the formation of sex cells, eg. pollens and ovules in flowers or sperms and eggs in animals.

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  • 7. 

    The following shows the structures of a sperm. Why does this sperm have a lot of mitochondria?

    • A.

      To conserve water

    • B.

      To produce chemical for fertilisation

    • C.

      To produce energy for swimming

    • D.

      To prevent the tail from breaking

    Correct Answer
    C. To produce energy for swimming
    Explanation
    The sperm has a lot of mitochondria to produce energy for swimming. Mitochondria are the powerhouses of the cell and generate ATP, which is the main source of energy for cellular activities. Swimming requires a lot of energy, and the mitochondria in the sperm provide the necessary ATP for the tail to move rapidly and propel the sperm towards the egg.

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  • 8. 

    Which of the following is a tissue?

    • A.

      Heart

    • B.

      Digestive system

    • C.

      Skin

    • D.

      Muscle

    Correct Answer
    D. Muscle
    Explanation
    There are 4 types of tissues: epithelial tissues, muscular tissues, nervous tissues and connective tissues,
    Connective tissues include blood, ligaments and tendons. Skin is the largest organ in the body.

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  • 9. 

    The image shows a Paramecium. Which is not a correct description of this organism?

    • A.

      A protozoan

    • B.

      A unicellular organism

    • C.

      A specialised cell of a multicellular organism

    • D.

      An animal-like single celled organism

    Correct Answer
    C. A specialised cell of a multicellular organism
    Explanation
    The image shows a Paramecium, which is a unicellular organism. It is not a specialised cell of a multicellular organism because it is a complete organism on its own. Paramecium belongs to the group of protozoa, which are animal-like single-celled organisms.

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  • 10. 

    Which structure is the Vacuole?

    • A.

      A

    • B.

      B

    • C.

      D

    • D.

      F

    Correct Answer
    A. A
    Explanation
    The correct answer is A because the vacuole is a membrane-bound organelle found in the cells of plants and some protists. It is typically the largest organelle in the cell and is responsible for storing water, nutrients, and waste products. It helps maintain the cell's shape and turgor pressure, and also plays a role in regulating the cell's pH and ion balance.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 31, 2013
    Quiz Created by
    Edward Hung
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