Scientific Method with DNA
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Metoda Științifică Pași
De Oliver Smith
Metoda științifică este un proces constant: o descoperire poate duce la mai multe întrebări care, atunci când sunt investigate, pot duce la mai multe răspunsuri. Pe lângă un rezumat al pașilor cheie ai metodei științifice, există activități sugerate pentru a-i determina pe elevii să se implice în gândirea despre știință în lumea reală.
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Storyboard Descriere
scientific method comic: See the steps of the scientific method for the discovery of DNA's helical shape
Storyboard Text
- 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/)
Atribuirea Imaginilor
- X-ray ensemble - genomebiology - (Licență Attribution )
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