Biology 20: The Organism and Its Environment
Biology 20 focuses on the organization and functioning of living things, moving from the cellular level to whole organisms and their interactions with the environment. Success here relies on mastering complex cycles and understanding the integration of organ systems.
Program of Studies for Biology 20
Unit Title | Core Concepts | Tutor Masters Focus |
Energy and Matter Exchange in the Biosphere | Photosynthesis (light-dependent and light-independent reactions); Cellular Respiration (glycolysis, Krebs cycle, ETC); Nutrient cycling (C, N, P cycles). | The Energy Connection: We clarify the precise locations and purpose of each stage in Photosynthesis and Cellular Respiration. We use detailed diagrams to show the flow of energy and the critical role of energy carriers. |
Continuity and Diversity | DNA structure and function; DNA replication, Mitosis and Meiosis; Patterns of Inheritance (Mendelian Genetics). | Conceptualizing Division: We use visual aids to clearly distinguish between Mitosis (growth, repair) and Meiosis (gamete production), ensuring students understand the reduction in chromosome number in Meiosis and its implications for genetic variation. |
Nervous and Endocrine Systems | Structure and function of neurons; Action potential and synaptic transmission; Hormone action and feedback loops (e.g., blood sugar regulation). | Communication Systems: We simplify the complex concepts of the Action Potential by explaining ion movement and the all-or-none principle. We focus on how the endocrine system’s feedback loops maintain homeostasis. |
Circulatory and Immune Systems | Heart structure and blood flow; Gas exchange (respiration); Components of the Immune System; Specific vs. Non-specific defence. | System Integration: We show how the circulatory and respiratory systems are interdependent. For immunity, we simplify the complex interplay between different immune cells (T-cells, B-cells) and the process of developing immunological memory. |
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Is your high schooler struggling to keep up with the demands of the Biology 20 program? Tutor Masters offers a personalized and effective solution designed not only to boost grades but also build confidence as the student progresses through the core concepts of the program.
If you believe your teen could benefit from extra help in Biology 20, contact us today at (780) 960-1663 or click the link below to get started. Our Director of Education will contact you to discuss your teen’s unique learning needs and create a customized learning plan that builds the advanced skills required for success in high-school science and future academic pathways.
Our Tutor Masters team looks forward to hearing from you.