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1. Cell Structure

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2 topics · 12 learning objectives

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  1. 1.1 The Microscope in Cell Studies

    1. 1.1.1Temporary cell preparations

      • Make temporary preparations of cellular material for light microscopy

    2. 1.1.2Cell drawings

      • Draw cells from microscope slides and photomicrographs

    3. 1.1.3Magnification and actual size

      • Calculate magnifications and actual sizes from drawings, photomicrographs and electron micrographs

    4. 1.1.4Microscope measurement tools

      • Use eyepiece graticule and stage micrometer with units: mm, µm, nm

    5. 1.1.5Resolution and magnification

      • Define and explain resolution vs magnification in light and electron microscopy

  2. 1.2 Cells as Basic Units of Living Organisms

    1. 1.2.1Eukaryotic cell organelles

      • Recognise and describe organelles in eukaryotic cells: - Cell surface membrane - Nucleus, nuclear envelope, nucleolus - Rough and smooth endoplasmic reticulum - Golgi body - Mitochondria (with small circular DNA) - Ribosomes (80S in cytoplasm, 70S in chloroplasts/mitochondria) - Lysosomes - Centrioles and microtubules - Cilia and microvilli - Chloroplasts (with small circular DNA) - Cell wall and plasmodesmata - Large permanent vacuole and tonoplast (plant cells)

    2. 1.2.2Cell images and drawings

      • Interpret photomicrographs, electron micrographs and drawings of plant and animal cells

    3. 1.2.3Plant and animal cell comparison

      • Compare plant and animal cell structures

    4. 1.2.4ATP in cells

      • State that cells use ATP from respiration for energy-requiring processes

    5. 1.2.5Prokaryotic cell features (bacteria)

      • Prokaryotic cell features (bacteria): - Unicellular, 1–5 µm diameter - Peptidoglycan cell walls - Circular DNA - 70S ribosomes - Absence of double-membrane organelles

    6. 1.2.6Prokaryotes vs eukaryotes

      • Compare prokaryotic and eukaryotic cell structures

    7. 1.2.7Virus structure and envelope

      • Virus structure: non-cellular with nucleic acid core (DNA or RNA), protein capsid, some with phospholipid envelope