Biology

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Hand-drawn memory-cell librarian recognizes a microbe’s three-point antigen feature in a scrapbook, illustrating antigen-specific immune memory that helps a later response.

Immunity, Reproduction and Development: Compare Cell Roles

Compare innate and adaptive immunity, fertilization and cell differentiation. Use a process table, a gene-expression example and six practice questions.

Hand-drawn hormone signaling comic compares a cell with a suitable surface receptor and one without; response requires the right receptor and cellular machinery.

Nervous and Endocrine Control: Signals and Movement

Explore nervous and endocrine control through reflexes, hormone receptors and muscle contraction. Check six practice questions with explained answers.

Handmade felt comic pairs lungs exchanging oxygen into blood and carbon dioxide out with a heart courier driving blood flow, showing their distinct roles in oxygen delivery.

Transport and Exchange: Oxygen, Nutrients and Kidneys

Hand-drawn hedgehogs stand in woodland patches separated by roads and fields, showing how habitat fragmentation can disrupt wildlife movement and connections.

Human Impact on Biodiversity: Climate and Nutrient Pollution

Hand-painted pond snapshots compare same-species frogs as a population with frogs, a snail, a dragonfly, plants and fungi representing an ecological community.

Populations, Communities and Biomes: Compare Ecology Levels

Hand-sketched axolotl watches a DNA gel with negative wells above and a positive electrode below; a 200-base-pair fragment travels farther than a 900-base-pair fragment under the same suitable conditions.

Biotechnology Tools: PCR, DNA Gels and Gene Editing

Watercolor comic of a nerve cell and muscle cell backstage with identical DNA manuals and different work cues, illustrating how different gene expression supports specialized cell functions.

Gene Regulation and Cell Specialization: RNA and Proteins

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Biology

Immunity, Reproduction and Development: Compare Cell Roles

Nervous and Endocrine Control: Signals and Movement

Transport and Exchange: Oxygen, Nutrients and Kidneys

Human Impact on Biodiversity: Climate and Nutrient Pollution

Populations, Communities and Biomes: Compare Ecology Levels

Biotechnology Tools: PCR, DNA Gels and Gene Editing

Gene Regulation and Cell Specialization: RNA and Proteins

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