Scientific Method with DNA
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Fasi del metodo scientifico
Di Oliver Smith
Il metodo scientifico è un processo costante: una scoperta può portare a molte più domande che, se indagate, possono portare a più risposte. Oltre a una sintesi dei passaggi chiave del metodo scientifico, vengono suggerite attività per coinvolgere i tuoi studenti a pensare alla scienza nel mondo reale.
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Storyboard Descrizione
scientific method comic: See the steps of the scientific method for the discovery of DNA's helical shape
Testo Storyboard
- Diapositiva: 1
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- Question
- Diapositiva: 2
- DNA has four bases.
- Avery, MacLeod and McCarty discovered that DNA was likely to carry the genetic information. They did not, however, know the shape of the DNA molecule.
- Diapositiva: 3
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- Hypothesis
- Diapositiva: 4
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- Crick and Watson hypothesized that DNA had a helical (spiral) shape.
- Diapositiva: 5
- I think __________ will happen.
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- Prediction
- Diapositiva: 6
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- If the form of DNA were helical, then its X-ray diffraction pattern would be X-shaped.
- Diapositiva: 7
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- Experiment
- Diapositiva: 8
- I carried out an experiment using X-rays to look at the structure of DNA. Using this image I made, we can work out what the structure is.
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- Rosalind Franklin was carrying out research at Kings College, London. She looked at the structure of DNA using X-ray diffraction.
- Diapositiva: 9
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- Analysis
- Diapositiva: 10
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- The images were shared with Watson and Crick who analyzed the images and discovered that the pattern matched their hypothesis and prediction.
Attribuzioni Immagine
- X-ray ensemble - genomebiology - (Licenza Attribution )