Organisation of the Organism
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Questions and Answers

What is true about the units of magnification?

  • Magnification is expressed in millimetres.
  • Magnification is usually ignored in calculations.
  • Magnification is expressed in micrometres.
  • Magnification has no units. (correct)
  • 1 millimetre is equal to 100 micrometres.

    False

    How many micrometres are there in one centimetre?

    10,000

    1mm is equal to _______ micrometres.

    <p>1000</p> Signup and view all the answers

    Match the following units with their equivalents:

    <p>1mm = 1000µm 1cm = 10,000µm 1µm = 0.001mm 1dm = 100mm</p> Signup and view all the answers

    Which of the following features is NOT found in animal cells?

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

    Plant cells are able to carry out photosynthesis.

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

    What is the primary function of the cell membrane?

    <p>Holds the cell together and controls substance movement</p> Signup and view all the answers

    Chloroplasts are present in animal cells.

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

    What carbohydrate is primarily stored in plant cells?

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

    What substance is the cell wall of plant cells primarily made of?

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

    Animal cells do not have ________ cell walls.

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

    Match the following components with their respective cell type.

    <p>Chloroplasts = Plant Cells Glycogen = Animal Cells Cellulose cell wall = Plant Cells Distinct membrane around nucleus = Both</p> Signup and view all the answers

    Bacteria cells lack a __________.

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

    Which statement is true regarding the nucleus in both animal and plant cells?

    <p>It is the location of DNA.</p> Signup and view all the answers

    Match the following cell structures with their functions:

    <p>Ribosomes = Protein synthesis Mitochondria = Aerobic respiration Cell wall = Support and shape Vacuole = Storage and maintaining cell shape</p> Signup and view all the answers

    Which of the following statements is true about ribosomes?

    <p>They are the site of protein synthesis.</p> Signup and view all the answers

    Animal cells have cell walls made of cellulose.

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

    Plasmids are always present in bacterial cells.

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

    What is the storage form of carbohydrates in animal cells?

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

    What is the composition of cytoplasm?

    <p>water and dissolved solutes</p> Signup and view all the answers

    What structure allows bacteria to move?

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

    Lactobacillus is a spherical bacterium used in the production of yoghurt.

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

    Name one organelle found in the cytoplasm of eukaryotic cells.

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

    The ____ acts as a pathogen causing pneumonia.

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

    Match the following bacterial names with their shapes:

    <p>Lactobacillus = Rod-shaped Pneumococcus = Spherical</p> Signup and view all the answers

    What type of endoplasmic reticulum appears rough under a microscope?

    <p>Rough Endoplasmic Reticulum</p> Signup and view all the answers

    Ribosomes are only found attached to the Endoplasmic Reticulum.

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

    What structure is involved in the movement of materials throughout the cytoplasm?

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

    What is the primary focus when identifying different levels of organization in an organism?

    <p>The types of cells in a tissue</p> Signup and view all the answers

    Tissues are made up of multiple types of cells.

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

    What is the significance of the levels of organization in biology?

    <p>They provide a framework for understanding how cells, tissues, and organs work together.</p> Signup and view all the answers

    In biology, tissues are always made up of only one type of ______.

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

    Match the levels of organization with their definitions:

    <p>Cell = Basic unit of life Tissue = Group of similar cells Organ = Structure made of different tissues Organism = Complete living entity</p> Signup and view all the answers

    Which of the following resources is offered for exam preparation?

    <p><a href="http://www.savemyexams.com">www.savemyexams.com</a></p> Signup and view all the answers

    Identifying tissues is a significant part of understanding levels of organization.

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

    How should one prepare for questions on levels of organization?

    <p>By studying drawings, diagrams, and images of biological structures.</p> Signup and view all the answers

    Which of the following is a function of red blood cells?

    <p>Transport oxygen</p> Signup and view all the answers

    Egg cells are known for their ability to move independently.

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

    What is the primary function of nerve cells?

    <p>Transmit signals</p> Signup and view all the answers

    The ______ hair cell is specialized for water and nutrient absorption in plants.

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

    Match the following specialized cells with their primary function:

    <p>Xylem = Water transport Red blood cell = Oxygen transport Nerve cell = Signal transmission Sperm cell = Reproduction</p> Signup and view all the answers

    Which specialized plant cell is responsible for transporting water?

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

    Specialized cells in animals and plants have similar functions.

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

    Name one type of specialized cell in animals.

    <p>Nerve cell</p> Signup and view all the answers

    Study Notes

    Cell Structure & Size of Specimens

    • Cells are the basic units of life.
    • Animal cells have a nucleus with a distinct membrane, but do not have cell walls made of cellulose. They do not contain chloroplasts, and store carbohydrates as glycogen.
    • Plant cells have a nucleus with a distinct membrane and cell walls made of cellulose. Plant cells contain chloroplasts, and store carbohydrates as starch or sucrose.
    • Cell structure diagrams are included in the document (e.g., animal cell, plant cell, bacterial cell)
    • Different organelles have specific functions within the cell.
    • The cytoplasm is a gel-like substance that supports the internal structures of the cell and is the site of many chemical reactions, including anaerobic respiration.
    • The cell membrane controls what enters and leaves the cell.
    • Ribosomes are the site of protein synthesis; found in the cytoplasm
    • Mitochondria are the site of aerobic respiration.
    • There are different levels of organization in an organism.

    Organisation of Cells

    • Cells divide to help the body grow and repair itself.
    • New cells come from existing cells by cell division.
    • Specialized cells in animals perform specific functions.
    • Cells undergo differentiation to develop specific structures and characteristics.

    Magnification Formula

    • Magnification = Image size ÷ Actual size
    • A triangle method is provided for easy calculation
    • Actual size = Image size ÷ Magnification
    • Image size = Magnification × Actual size
    • Units for magnification are not expressed in the formula.

    Converting Between Units

    • 1 centimetre (cm) = 10 millimetres (mm)
    • 1 millimetre (mm) = 1000 micrometres (µm)

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    Description

    Test your knowledge on cell structures, functions, and differences between plant and animal cells. This quiz covers topics including magnification units, cellular components, and the characteristics of various cell types. Perfect for biology students needing to reinforce their understanding of key concepts.

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