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  1. Mitochondria and Energy Production
    by Dr. Osama M. Khaled — published Jun 15, 2026 — last modified Jun 15, 2026 08:03 AM — filed under: Year 8, Year 11
    This quiz covers the powerhouse of the cell: ATP production, the roles of cristae and matrix, the outer and inner membranes, fat droplet storage, and why ...
    Located in Biology / Cell Structure
  2. Plant Cell vs. Animal Cell
    by Dr. Osama M. Khaled — published Jun 15, 2026 — last modified Jun 15, 2026 09:07 AM — filed under: Year 8, Year 11
    Compare-and-contrast quiz on structures exclusive to plant cells (cell wall, chloroplasts, large central vacuole, plasmodesmata, tonoplast) vs. animal cells ...
    Located in Biology / Cell Structure
  3. Chloroplasts and Photosynthesis Organelles
    by Dr. Osama M. Khaled — published Jun 15, 2026 — last modified Jun 15, 2026 06:24 PM — filed under: Year 8, Year 11
    This quiz covers chloroplast structure (stroma, grana, lamellae, outer membrane), the role of plastids, and how chloroplasts compare to mitochondria in ...
    Located in Biology / Cell Structure
  4. Vacuoles and Cell Sap
    by Dr. Osama M. Khaled — published Jun 15, 2026 — last modified Jun 15, 2026 09:26 PM — filed under: Year 8, Year 11, Year 12
    Focuses on plant vacuoles (tonoplast, cell sap, hyperosmotic conditions), contractile vacuoles in single-celled organisms, and the role of vacuoles in storing ...
    Located in Biology / Cell Structure
  5. Kepler's Third Law
    by Dr. Osama M. Khaled — published Mar 29, 2024 — last modified Jul 13, 2024 12:42 PM — filed under: Year 10, Year 11, Year 12
    Kepler's third law states the relationship between a planet's average distance from the sun and the time required for the planet to complete one orbit
    Located in Physics / Gravity
  6. Pressure
    by Dr. Osama M. Khaled — published Sep 09, 2024 — last modified Sep 09, 2024 08:38 PM — filed under: Year 8, Year 11, Year 12
    Pressure is the force divided by the area over which the force is applied
    Located in Physics / Solids
  7. Elasticity and Hooke's Law
    by Dr. Osama M. Khaled — published Sep 29, 2024 — last modified Nov 03, 2024 08:43 AM — filed under: Year 11
    The elasticity of a substance is a measure of how well it returns to its original shape
    Located in Physics / Solids
  8. Exercises
    by Dr. Osama M. Khaled — published Oct 19, 2024 — last modified Nov 08, 2024 07:14 PM — filed under: Year 11
    Questions covering knowledge about solid
    Located in Physics / Solids
  9. Menstrual Cycle
    by Dr. Osama M. Khaled — published Jun 18, 2026 — last modified Jun 18, 2026 03:09 AM — filed under: Year 8, Year 11
    This quiz covers the four key hormones (FSH, estradiol, LH, progesterone), the ovarian vs. uterine cycle distinction (with a hormone-timeline diagram), ...
    Located in Biology / Reproduction
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