Grade 11 Biology: Term 1 Foundations
Grade 11 Biology — Term 1: Cells, Energy, and Heredity is a 24-session course for the American high school curriculum, aligned to NGSS Life Science standards (HS-LS1 and HS-LS3). This course is about more than memorizing parts of a cell or matching words to definitions. It is about learning to notice patterns in living systems, explain those patterns with evidence, and connect events that happen at very different scales. A molecule changing shape can affect a cell; a change in one cell can affect an organ; and the behavior of organisms can reshape an ecosystem. Each session is designed for independent online study. Every session moves from a real-world puzzle through guided instruction, a visual-analysis task, an application task, and a self-check with full answer feedback. Students should keep a notebook nearby: sessions regularly ask them to predict, sketch, calculate, and explain before reading on, because producing an answer strengthens learning far more than simply rereading a paragraph.
📚 Course Curriculum
Estimated time: 70 minutes. NGSS connection: HS-LS1-2; Developing and Using Models. Start with a puzzle. A seed can sit in a dry envelope for years …
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Estimated time: 80 minutes. Science practice: Planning Investigations and Analyzing Data. Start with a question. Someone tells you, “Plants grow better when music is playing.” …
Open trial session →Estimated time: 75 minutes. NGSS connection: HS-LS1-6. Start small. The water in a glass looks simple, but every drop contains more molecules than you could …
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Estimated time: 85 minutes. NGSS connection: HS-LS1-6. Start with lunch. A sandwich may contain starch, oil, protein, vitamins, minerals, water, and nucleic acids from once-living …
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Estimated time: 75 minutes. NGSS connection: HS-LS1-6. Start with a mystery. A sealed bottle of hydrogen peroxide can remain stable for months. Place it on …
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Estimated time: 75 minutes. NGSS connection: HS-LS1-1. Start with a change in view. Before microscopes, people could describe tissues but could not see their basic …
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Estimated time: 70 minutes. NGSS connection: HS-LS1-1, HS-LS1-2. Start with scale. If a typical bacterial cell were the size of a grape, a typical human …
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Estimated time: 80 minutes. NGSS connection: HS-LS1-1, HS-LS1-2. Start with a delivery. Imagine a pancreatic cell producing insulin. The instructions must be accessed, a protein …
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Estimated time: 75 minutes. NGSS connection: HS-LS1-1, HS-LS1-2. Start with a leaf. A leaf looks thin and still, yet it regulates gas exchange, moves water, …
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Estimated time: 75 minutes. NGSS connection: HS-LS1-2, HS-LS1-3. Start at the edge. A cell cannot remain alive if everything inside freely mixes with everything outside. …
Open trial session →Estimated time: 85 minutes. NGSS connection: HS-LS1-3. Start with movement. Open a bottle of perfume in one corner of a room, and molecules spread even …
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Estimated time: 75 minutes. NGSS connection: HS-LS1-2, HS-LS1-3. Start against the flow. Diffusion tends to spread particles out. Cells often need the opposite: they concentrate …
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Estimated time: 80 minutes. NGSS connection: HS-LS1-2, HS-LS1-3. Start with a message. After a meal, glucose enters the bloodstream. Cells do not measure that change …
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Estimated time: 70 minutes. NGSS connection: HS-LS1-7. Start with a correction. Food contains stored chemical energy, but a cell does not power every task by …
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Estimated time: 90 minutes. NGSS connection: HS-LS1-5, HS-LS1-6. Start with the mass of a tree. A growing tree becomes heavier, but most of its dry …
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Estimated time: 90 minutes. NGSS connection: HS-LS1-7. Start with a sprint. During a sprint, muscle ATP demand rises almost instantly. Stored ATP lasts only briefly, …
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Estimated time: 80 minutes. NGSS connection: HS-LS1-5, HS-LS1-6, HS-LS1-7. Start with a common mistake. People sometimes say plants photosynthesize while animals respire. The fuller truth …
Open trial session →Estimated time: 75 minutes. NGSS connection: HS-LS1-4. Start with growth. You began as one cell. Growth did not occur because that cell became the size …
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Estimated time: 85 minutes. NGSS connection: HS-LS1-4. Start with continuity. When skin heals after a small cut, nearby cells produce descendants that must carry the …
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Estimated time: 80 minutes. NGSS connection: HS-LS1-4. Start with balance. Cell division is essential, but more division is not automatically better. Tissues stay healthy by …
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Estimated time: 90 minutes. NGSS connection: HS-LS3-2. Start with a chromosome problem. If human egg and sperm cells each carried 46 chromosomes, fertilization would produce …
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Estimated time: 90 minutes. NGSS connection: HS-LS3-1, HS-LS3-3. Start in a garden. Gregor Mendel's pea experiments succeeded not because heredity is always simple, but because …
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Estimated time: 90 minutes. NGSS connection: HS-LS3-1, HS-LS3-2, HS-LS3-3. Start with complexity. Mendelian logic still matters, but many traits do not fit a one-gene, two-allele, …
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Estimated time: 100 minutes. NGSS connection: HS-LS1-1 through HS-LS1-7; HS-LS3-1 through HS-LS3-3. Start with the whole story. Biology makes the most sense when the chapter …
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Course Syllabus
Unit 1 — Foundations of Biology (Sessions 1-5): the characteristics of life and levels of biological organization; scientific investigation, variables, and evidence; the chemistry of water, pH, and carbon; carbohydrates, lipids, proteins, and nucleic acids; and enzyme action.
Unit 2 — Cells as Living Systems (Sessions 6-13): cell theory and microscopy; prokaryotic and eukaryotic cell plans; animal-cell organelles and the endomembrane system; plant-cell structures and cell specialization; the fluid mosaic membrane model; diffusion, osmosis, and tonicity; active transport and vesicle traffic; and cell communication and homeostasis.
Unit 3 — Energy in Living Systems (Sessions 14-17): ATP as an energy-coupling molecule; photosynthesis and the capture of light energy; cellular respiration and the release of energy from food; and photosynthesis and respiration as a connected system of matter cycling and energy flow.
Unit 4 — Growth and Heredity (Sessions 18-23): the cell cycle and its checkpoints; mitosis; cancer as a disease of cell-cycle control; meiosis and the origins of genetic variation; Mendelian inheritance and probability; and inheritance patterns beyond simple dominance.
Term Synthesis (Session 24): an integrated performance task connecting structure and function, matter and energy, biological information, and systems thinking into one explanation of a living organism.
Course Outcomes
By the end of Term 1, students will be able to:
- describe the characteristics of life and explain organization from molecules to the biosphere, including emergent properties;
- design and evaluate simple controlled investigations, distinguishing observation, inference, hypothesis, and correlation from causation;
- explain how water's polarity, pH, and carbon chemistry support biological structure and reaction;
- relate the structure of carbohydrates, lipids, proteins, and nucleic acids to their functions, and explain enzyme-catalyzed reactions;
- compare prokaryotic and eukaryotic cells and explain how organelles, the plasma membrane, and cell specialization support cellular and organismal function;
- predict the movement of substances across membranes by diffusion, osmosis, and active transport, and describe endocytosis, exocytosis, and cell signaling in homeostasis;
- trace the transformation of matter and energy through ATP, photosynthesis, and cellular respiration;
- explain the cell cycle, mitosis, and how loss of cell-cycle control contributes to cancer;
- explain how meiosis, independent assortment, crossing over, and fertilization generate genetic variation; and
- apply Mendelian and non-Mendelian inheritance patterns, including incomplete dominance, codominance, multiple alleles, polygenic traits, and pedigree analysis, to predict and interpret phenotypes.