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  1. Absolute Value Inequalities and Neighborhoods
    by Dr. Osama M. Khaled — published Aug 19, 2026 — last modified Aug 21, 2026 11:21 AM — filed under: Year 11, Year 12
    Covers solving absolute value inequalities and the concept of a neighborhood or deleted neighborhood of a point.
    Located in Mathematics / Calculus / Discovery of Real Numbers: Through Traditional Algebra
  2. Properties of Absolute Value (Theorems)
    by Dr. Osama M. Khaled — published Aug 19, 2026 — last modified Aug 21, 2026 11:20 AM — filed under: Year 12
    Covers the multiplicative and quotient properties of absolute value, the Triangle Inequality, and related theorems.
    Located in Mathematics / Calculus / Discovery of Real Numbers: Through Traditional Algebra
  3. Denseness and Completeness of Real Numbers
    by Dr. Osama M. Khaled — published Aug 19, 2026 — last modified Aug 21, 2026 11:19 AM — filed under: Year 12
    Covers the denseness property, bounded and unbounded sets, and the least upper bound / greatest lower bound (completeness) properties.
    Located in Mathematics / Calculus / Discovery of Real Numbers: Through Traditional Algebra
  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. Cilia, Flagella, and Centrioles
    by Dr. Osama M. Khaled — published Jun 15, 2026 — last modified Jun 15, 2026 09:38 PM — filed under: Year 11, Year 12
    This quiz covers the 9+2 microtubule arrangement in cilia and flagella, basal bodies, centriole structure (9 triplet sets), their role during mitosis (spindle ...
    Located in Biology / Cell Structure
  6. Cell Structure - Full Review
    by Dr. Osama M. Khaled — published Jun 16, 2026 — last modified Aug 23, 2026 07:34 AM — filed under: Year 8, Year 11, Year 12
    A full review quiz of the cell structure
    Located in Biology / Cell Structure
  7. Prokaryotic vs. Eukaryotic Cells
    by Dr. Osama M. Khaled — published Jun 16, 2026 — last modified Jun 17, 2026 01:51 AM — filed under: Year 8, Year 11, Year 12
    This quiz covers contrasts prokaryotic cell features (nucleoid, no membrane-bound organelles, binary fission) with eukaryotic cells, using the cyanobacterium ...
    Located in Biology / Cell Division
  8. Cell Division – Mitosis
    by Dr. Osama M. Khaled — published Jun 16, 2026 — last modified Jun 17, 2026 04:38 AM — filed under: Year 11, Year 12
    This quiz covers the full mitotic cycle: interphase, prophase, metaphase, anaphase, telophase, and late telophase - including roles of the spindle, chromatids, ...
    Located in Biology / Cell Division
  9. Cell Division – Meiosis
    by Dr. Osama M. Khaled — published Jun 16, 2026 — last modified Jun 16, 2026 06:24 PM — filed under: Year 11, Year 12
    This quiz covers the two meiotic divisions, crossover/recombination, gamete formation, chromosome number halving (haploid vs. diploid), and comparison with ...
    Located in Biology / Cell Division
  10. Cell Division Review
    by Dr. Osama M. Khaled — published Jun 16, 2026 — last modified Jun 16, 2026 06:25 PM — filed under: Year 8, Year 9, Year 11, Year 12
    Comprehensive mixed quiz spanning binary fission, mitosis, and meiosis
    Located in Biology / Cell Division
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