Bio Science Course

Lesson 1 • Biological Organization and Diversity

Surveys levels of biological organization from molecules to ecosystems and introduces the domains of life. Frames the scope of biological science for the entire course.

Lesson 2 • Cell Theory and Cell Types

Examines prokaryotic and eukaryotic cell organization and the historical development of cell theory. Establishes the cell as the fundamental unit of life.

Lesson 3 • The Scientific Method in Biology

Covers hypothesis formation, experimental design, and data interpretation in biological contexts. Anchors all future lab and field work in rigorous scientific reasoning.

Lesson 4 • Cell Organelles and Their Functions

Details the structure and role of major organelles including the nucleus, mitochondria, and ribosomes. Connects organelle function to overall cellular physiology.

Lesson 1 • Bulk Transport: Endo- and Exocytosis

Examines phagocytosis, pinocytosis, receptor-mediated endocytosis, and exocytosis. Demonstrates how large molecules and particles cross the membrane.

Lesson 2 • Active Transport Mechanisms

Covers ATP-driven pumps and electrochemical gradients that move solutes against concentration gradients. Links energy expenditure to maintaining cellular ion balance.

Lesson 3 • Membrane Permeability and Regulation

Analyzes how temperature, lipid composition, and protein density modulate membrane permeability. Prepares students to predict transport outcomes under varying conditions.

Lesson 4 • Passive Transport Processes

Explains diffusion, osmosis, and facilitated diffusion driven by concentration gradients. Connects thermodynamic principles to real cellular transport scenarios.

Lesson 1 • Enzymes and Metabolic Pathways

Introduces enzyme structure, catalytic mechanisms, and pathway regulation. Provides the enzymatic framework underlying all metabolic processes covered in this chapter.

Lesson 2 • Oxidative Phosphorylation and Chemiosmosis

Details the electron transport chain and ATP synthase-driven chemiosmosis in mitochondria. Explains how the majority of cellular ATP is generated aerobically.

Lesson 3 • Photosynthesis: Light and Dark Reactions

Covers light absorption, the light-dependent reactions, and the Calvin cycle in chloroplasts. Connects solar energy capture to organic molecule synthesis.

Lesson 4 • Cellular Respiration: Glycolysis and Krebs Cycle

Traces glucose breakdown through glycolysis and the citric acid cycle, tracking carbon and energy carriers. Builds step-by-step understanding of aerobic respiration.

Lesson 1 • Gene Regulation and Expression Control

Examines operons in prokaryotes and transcription factor networks in eukaryotes. Explains how cells control which genes are expressed in response to signals.

Lesson 2 • Transcription and RNA Processing

Explains how RNA polymerase transcribes DNA into pre-mRNA and how eukaryotic RNA is processed. Links gene sequence to functional messenger RNA.

Lesson 3 • Translation and Protein Synthesis

Details ribosome function, codon-anticodon interactions, and polypeptide elongation. Completes the central dogma pathway from gene to functional protein.

Lesson 4 • Mendelian Genetics and Inheritance Patterns

Applies Mendel's laws to monohybrid and dihybrid crosses, including extensions such as incomplete dominance. Builds quantitative prediction skills for trait inheritance.

Lesson 1 • Cancer Biology and Cell Cycle Disruption

Analyzes how mutations in proto-oncogenes and tumor suppressors lead to uncontrolled proliferation. Applies cell cycle knowledge to understanding tumor development.

Lesson 2 • Asexual and Sexual Reproduction

Contrasts binary fission, budding, and fragmentation with sexual reproduction strategies across taxa. Evaluates evolutionary trade-offs of each reproductive mode.

Lesson 3 • Mitosis and Cytokinesis

Traces chromosomal events through prophase, metaphase, anaphase, and telophase, followed by cytoplasmic division. Connects mitosis to accurate somatic cell replication.

Lesson 4 • The Cell Cycle and Its Regulation

Describes interphase stages, checkpoints, and cyclin-CDK complexes controlling cell division. Provides the regulatory framework for understanding normal and abnormal proliferation.

Lesson 1 • Population Genetics and Hardy-Weinberg

Introduces allele frequency, the Hardy-Weinberg equilibrium, and forces that alter population gene pools. Quantifies evolutionary change at the population level.

Lesson 2 • Natural Selection and Adaptation

Explains variation, heritability, differential survival, and reproductive success as the basis of natural selection. Connects selective pressures to observable trait changes.

Lesson 3 • Evidence for Evolution

Reviews fossil records, comparative anatomy, molecular phylogenetics, and biogeography as evolutionary evidence. Establishes the empirical basis for evolutionary theory.

Lesson 4 • Phylogenetics and Classification

Teaches cladogram construction, shared derived characters, and modern taxonomic classification. Enables students to read and build phylogenetic trees from biological data.

Lesson 1 • Cardiovascular and Respiratory Systems

Covers heart anatomy, cardiac cycle, blood composition, and gas exchange in the lungs. Connects circulatory and respiratory functions to oxygen delivery and CO2 removal.

Lesson 2 • Immune System and Defense Mechanisms

Distinguishes innate and adaptive immunity, antibody production, and immunological memory. Applies immune principles to vaccination, autoimmunity, and infection response.

Lesson 3 • Digestive and Excretory Systems

Traces nutrient digestion, absorption, and waste elimination through the digestive and urinary systems. Links biochemical processes to organ-level physiology.

Lesson 4 • Nervous and Endocrine Systems

Explains neuron signaling, synaptic transmission, and hormonal regulation of body functions. Demonstrates how electrical and chemical signals coordinate physiological responses.

Lesson 1 • Community Ecology and Species Interactions

Examines predation, competition, mutualism, parasitism, and their effects on community structure. Explains how species interactions shape biodiversity and ecosystem stability.

Lesson 2 • Human Impact and Conservation Biology

Evaluates habitat destruction, climate change, invasive species, and biodiversity loss caused by human activity. Introduces conservation strategies grounded in ecological principles.

Lesson 3 • Biomes and Aquatic Ecosystems

Characterizes major terrestrial biomes and freshwater and marine ecosystems by climate and biodiversity. Provides ecological context for understanding species distributions.

Lesson 4 • Ecosystem Energy Flow and Nutrient Cycles

Traces energy through trophic levels and follows carbon, nitrogen, and phosphorus biogeochemical cycles. Quantifies energy loss and nutrient recycling in ecosystems.