Tag: helix
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Thymine Dimers & DNA Repair
Teaching DNA damage and repair can feel abstract for students, until they can clearly visualize and apply it. This classroom-ready activity helps students understand thymine dimers and nucleotide excision repair (NER) through diagram analysis, structured questions, and real-world connections. By focusing on how DNA is damaged by UV radiation and how cells fix that damage,…
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Reinforcement: DNA
This worksheet was designed for 2nd year biology (AP Biology) as a way for students to review the structure of DNA and the history of the experiments that lead to its establishment as the molecule of heredity. Historical references include those related to Frederick Griffith’s experiments with transformation in bacteria and Hershey-Chase experiments with bacteriophages.…
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DNA Coloring
DNA, or deoxyribonucleic acid, is a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses. It consists of two long chains of nucleotides twisted into a double helix structure. Each nucleotide is composed of a sugar molecule (deoxyribose), a phosphate group, and…