Welcome to Biology 20! This on-demand course was put together especially for Biology 20 at Alberta High School. Use the video lessons and notes to understand your lecture topics better, and the practice questions to cement your knowledge. And don't hesitate to leave a question in the Q&A box under each lesson if you need additional help with anything. Happy studying!
Biology 20
Alberta High School
Course Overview
Lessons & Practice
1. Biodiversity & Ecosystem Health
2.4hr1.2.1. Phylogenetic Trees4 min1.2.2. Similar Traits Within & Between Phylogenetic Groups56 sec1.2.3. Dichotomous Keys5 min1.2.4. Example: Using Dichotomous Keys4 min1.2.5. Practice: Phylogenetic Trees1.2.6. Example: Using Trait Tables to Build Phylogenetic Trees6 min1.2.7. Example: Phylogenetic Trees4 min1.2.8. Practice: Using Trait Tables to Build Phylogenetic Trees4 min1.2.9. Practice: Cladistics
1.3.1. Biomes and Abiotic Factors5 min1.3.2. Biomes: Freshwater7 min1.3.3. Biomes: Forest6 min1.3.4. Biomes: Marine7 min1.3.5. Biomes: Desert6 min1.3.6. Biomes: Grassland5 min1.3.7. Biomes: Tundra4 min1.3.8. Example: Tropical Forest vs. Hot and Dry Desert5 min1.3.9. Practice: Desert Biomes1.3.10. Practice: Biomes1.3.11. Practice: Tundra vs. Desert
2. Selection & Evolution
1.2hr2.2.1. Descent with Modification6 min2.2.2. Practice2.2.3. Evolution of Populations5 min2.2.4. Example: Constraints to Selection4 min2.2.5. Example: Directional Selection2 min2.2.6. Practice: Variation2.2.7. Practice: Genetics46 sec2.2.8. Practice: Drivers of Evolution1 min2.2.9. Graphing Allele Frequencies Over Time7 min2.2.10. Practice: Relative Fitness5 min
3. Genetics of Inheritance
3hr3.3.1. Meiosis I10 min3.3.2. Meiosis II5 min3.3.3. Chromosomal Crossover3 min3.3.4. Chromosomal Nondisjunction, Aneuploidy and Polyploidy6 min3.3.5. Sexual Life Cycle Strategies3 min3.3.6. Example: Non-disjunction6 min3.3.7. Practice: Fertilized Zygote3.3.8. Practice: End of Prophase II2 min3.3.9. Practice: Mitosis vs Meiosis Metaphase2 min
3.4.1. Alleles3 min3.4.2. Genotype and Phenotype5 min3.4.3. History of Mendelian Genetics4 min3.4.4. Mendel's Law of Segregation10 min3.4.5. Mendel's Law of Independent Assortment6 min3.4.6. Cheatsheet: Inheritance Terminology3.4.7. Example: Independent Assortment3 min3.4.8. Practice: Recessive Trait3.4.9. Practice: Inheritance Terminology3.4.10. Practice: Mendel's Laws
3.5.1. Punnett Square Rules4 min3.5.2. Example: Punnet Square5 min3.5.3. Example: Sum Rule in Genetics3 min3.5.4. Incomplete Dominance and Co-Dominance3 min3.5.5. Example: Incomplete vs Co-dominance3 min3.5.6. Blood Types2 min3.5.7. Practice: Probability in Genetics57 sec3.5.8. Practice: Probability of Sickle Cell Anemia2 min3.5.9. Practice: Cystic Fibrosis Phenotype Probability3 min3.5.10. Practice: Possible Blood Types
3.7.1. Pedigree Analysis9 min3.7.2. Inheritance of Autosomal Traits9 min3.7.3. Example: Autosomal Recessive2 min3.7.4. Example: Autosomal Dominant4 min3.7.5. Inheritance of X-linked Traits5 min3.7.6. Sex-linked Genes & Reciprocal Crosses4 min3.7.7. Example: Sex Linked Traits2 min3.7.8. Example: X-linked Dominant3 min3.7.9. Practice: Type of Inhertiance3.7.10. Practice: AD, AR, or X?3.7.11. Practice: Type of Inheritance 2
4. Chemistry of Life
1.3hr5. Cell Biology
3hr5.2.1. Eukaryotic Cells2 min5.2.2. Nucleus8 min5.2.3. Cytoplasm3 min5.2.4. Ribosomes3 min5.2.5. Endoplasmic Reticulum 3 min5.2.6. Golgi Apparatus 3 min5.2.7. Mitochondria & Chloroplasts6 min5.2.8. Lysosomes 4 min5.2.9. Cells That Move 2 min5.2.10. Illustrations of Cellular Components: Halloween at the Factory7 min5.2.11. Plants vs. Animal Cells3 min5.2.12. Cell Fractionation 2 min5.2.13. Practice: Chloroplast5.2.14. Practice: Mitochondria5.2.15. Practice: Organelles with Membranes5.2.16. Practice: Plant Cells Only
5.4.1. The Fluid Mosaic Model5 min5.4.2. Factors Affecting Membrane Fluidity5 min5.4.3. Practice: Membrane Protein Functions1 min5.4.4. Practice: Cholesterol1 min5.4.5. Getting Proteins Into Membranes3 min5.4.6. Cystic Fibrosis: A Transmembrane Protein Disease 2 min5.4.7. Example: Fibrosis 2 min5.4.8. Practice: Cystic Fibrosis5.4.9. Practice: Cystic Fibrosis3 min
5.5.1. Diffusion Lesson Theory7 min5.5.2. Membrane Permeability3 min5.5.3. Osmosis and Osmolarity6 min5.5.4. Practice: Passive Transport5.5.5. Practice: Types of Passive Transport2 min5.5.6. Active Transport7 min5.5.7. Example: Build Your Own Transporter3 min5.5.8. Practice: Predict Entry Method3 min5.5.9. Practice: Shrink or Not to Shrink?4 min5.5.10. Endocytosis and Exocytosis5.5.11. Practice: Pinocytosis1 min
5.6.1. The Laws of Thermodynamics4 min5.6.2. Example: Life Requires Energy Input1 min5.6.3. Enzymes6 min5.6.4. Enzyme Activity4 min5.6.5. Example: Enzymes are Required for Life3 min5.6.6. Example: Enzyme Catalysis1 min5.6.7. ATP and the Proton Motive Force (PMF)6 min5.6.8. Practice: Reactions3 min5.6.9. Practice: ATP2 min5.6.10. Practice: Reaction Progress1 min
6. Biochemistry of Metabolism
1.4hr6.1.1. Light & The Electromagnetic Spectrum2 min6.1.2. Light Absorption by Chlorophyll2 min6.1.3. Plant Structures for Light-Dependent Reactions4 min6.1.4. Photosynthesis Overview9 min6.1.5. Example: Why Plants Need Light2 min6.1.6. Practice: Carbon Fixation6.1.7. Practice: Rate of Photosynthesis6.1.8. Practice: Source of Oxygen6.1.9. Practice: Overall Photosynthesis Reaction
6.3.1. Overview of Cellular Respiration4 min6.3.2. Example: Eukaryotic vs. Prokaryotic Respiration2 min6.3.3. Glycolysis4 min6.3.4. Pyruvate Processing4 min6.3.5. Practice: Product of Glycolysis6.3.6. Fermentation3 min6.3.7. Example: Fermentation2 min6.3.8. The Citric Acid Cycle/Krebs Cycle3 min6.3.9. Electron Transport Chain Overview3 min6.3.10. Practice: Processes in the Cytosol2 min6.3.11. Practice: Location of Krebs Cycle2 min6.3.12. Practice: Locations in Mitochondria2 min6.3.13. Practice: Permeability to H+3 min
7. Animal Physiology [Under construction]
58min8. Human Physiology: The Respiratory System
1.3hr9. Human Physiology: The Circulatory System
2.5hr10. Human Physiology: The Digestive System
49min10.1.1. The Mouth & Esophagus4 min10.1.2. The Stomach6 min10.1.3. The Small Intestine6 min10.1.4. The Large Intestine3 min10.1.5. Example: Types of Digestion 2 min10.1.6. Accessory Structures of Digestion6 min10.1.7. Example: Accessory Organs of Digestion2 min10.1.8. Practice: Digestive System55 sec10.1.9. Practice: Bile Production & Storage1 min10.1.10. Practice: The Pancreas3 min
11. Human Physiology: The Excretory System [Under construction]
18min12. Human Physiology: The Motor System [Under construction]
23min13. Plants & Plant Physiology [Under construction]
50min13.4.1. Bryophytes2 min13.4.2. Characteristics of Seedless Vascular Plants3 min13.4.3. Diversity of Seedless Vascular Plants4 min13.4.4. Example: Seedless Plant Life Cycles13.4.5. Practice: Bryophytes13.4.6. Practice: Bryophyte Sperm13.4.7. Practice: Bryophyte Height13.4.8. Practice: Phloem13.4.9. Practice: Branching Vasculature13.4.10. Practice: Seedless Life Cycles13.4.11. Practice: Coal Swamps13.4.12. Practice: Seedless Diversity
13.6.1. Overview of Angiosperms3 min13.6.2. Angiosperm Reproduction2 min13.6.3. Advantages of Angiosperm Reproduction2 min13.6.4. Angiosperm Pollination3 min13.6.5. Monocots and Dicots13.6.6. Example: Flowers13.6.7. Practice: Angiosperm Adaptations13.6.8. Practice: Plant Evolution13.6.9. Practice: Parts of Flowers13.6.10. Practice: Double Fertilization13.6.11. Practice: Fruit Production13.6.12. Practice: Orchid and the Moth
14. Viruses, Archaea & Bacteria [Under construction]
24min15. Protists & Fungi [Under construction]
30min16. Overview of Animals [Under construction]
16min16.1.1. Overview of Animal Structure2 min16.1.2. Animal Reproduction and Development2 min16.1.3. Cell Structure and Specialization5 min16.1.4. Example: Germ Layers16.1.5. Practice: All Animal Cells16.1.6. Practice: Animal Embryo Development16.1.7. Practice: Animal Symmetry16.1.8. Practice: Animal Development
17. Invertebrates: Part 1 - Non-Molting [Under construction]
23min18. Invertebrates: Part 2 - Molting [Under construction]
29min19. Craniates (Developed Heads) [Under construction]
14min20. Tetrapods (Four Limbs) [Under construction]
25min21. Scientific Methods of Research [Under construction]
5min22. Energy & The Biosphere [Under construction]
14minBiology 20 Overview
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Course Notes
Wizeprep's course notes with hundreds of easy-to-understand explanations, diagrams, and practice problems.
Course Notes
Wizeprep's course notes with hundreds of easy-to-understand explanations, diagrams, and practice problems.