Scientific Method with DNA
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Postupci Znanstvene Metode
Autor Oliver Smith
Znanstvena metoda je stalan proces: jedno otkriće može dovesti do mnogo više pitanja koja, kada se istraže, mogu dovesti do više odgovora. Uz sažetak ključnih koraka znanstvene metode, postoje predložene aktivnosti koje će vaše učenike uključiti u razmišljanje o znanosti u stvarnom svijetu.
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Opis Storyboarda
scientific method comic: See the steps of the scientific method for the discovery of DNA's helical shape
Storyboard Tekst
- Part of the Scientific Method
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- Example
- DNA has four bases.
- Question
- 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.
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- Hypothesis
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- Crick and Watson hypothesized that DNA had a helical (spiral) shape.
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- I think __________ will happen.
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- Prediction
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- If the form of DNA were helical, then its X-ray diffraction pattern would be X-shaped.
- 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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- Experiment
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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.
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- Analysis
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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.
- Image Attributions:X-ray ensemble (https://www.flickr.com/photos/99249556@N03/9344158296/) - genomebiology - License: Attribution (http://creativecommons.org/licenses/by/2.0/)
Atributi Slike
- X-ray ensemble - genomebiology - (Licenca Attribution )
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