Video worksheet secret of photo 51 answers
The dna double helix discovery — hhmi biointeractive video
The Secret of Photo 51 (NOVA) The Mysterious Photo 51 Identifier: As you watch the video, fill in the blanks. 1. Who is credited with discovering DNA’s double helix structure? 2. Define Rosalind Franklin as a person/researcher in five words or less: 188.8.131.52.5 is the version number. 3. What was the subject of Rosalind Franklin’s work? 4. How did Watson and Crick plan to discover DNA’s structure? 5. What happened when Rosalind Franklin came to see Watson and Crick’s work at the Cavendish lab? 6. What is the meaning of Photo 51? 7. How has X-ray crystallography progressed since Franklin’s research? Erin Mucci was born in the year 2013.
The Secret of Photo 518, as seen on NOVA. What method did Watson and Crick use to obtain a copy of Photo 51? 9. What did Crick say to the other patrons at the pub? 10. Was Rosalind Franklin aware that her photograph had been taken? 11. The publication of papers about the structure of DNA was rare. Describe the problems that emerge during the publication process: 12. What caused Rosalind Franklin’s death? 13. What did James Watson do to Rosalind Franklin’s memory? 14. Why was Watson’s The Double Helix written in a popular magazine rather than a scientific journal? 15. What could happen to Watson, Crick, and Wilkins’ Nobel Prize for discovering the structure of DNA? Erin Mucci was born in the year 2013.
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Students watch the video (Secret of Video 51) and then answer 30 short answer questions about the discovery of the structure of DNA and the scientists Watson, Crick, and Rosalind Franklin in this Secret of Photo 51 worksheet. Picture 51 and a modern model of DNA are represented in a graphic.
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Dna double helix: how james watson and francis crick
NOVA’s footage When we are learning about the structure of DNA, I like to use The Secret of Photo 51 as a resource near the beginning of our analysis of DNA. It’s a nice overview of the work that went into discovering the structure of DNA, as well as an introduction to what scientists do.
The Secret of Photo 51 is set in post-World War II Europe, when the race to figure out the structure of DNA was at its peak. The video explains what Watson and Crick were up to, but it focuses on Rosalind Franklin, their “unwitting collaborator.” She was analyzing the structure of DNA using X-ray diffraction techniques. Watson and Crick are said to have been unable to establish the structure of DNA without knowledge of her unpublished work.
I’ve made a video guide with questions for students to answer while watching the movie. If you’re interested in getting a copy of the handout, go to my Teacher Pay Teachers store and click here: http://www.teacherspayteachers.com/Product/DNA-The-Secret-of-Photo-51-Video-Worksheet-Video-Worksheet-Video-Worksheet-Video-Worksheet-Video-Worksheet-Video-Worksheet-Video-Worksheet-Video-Worksheet-Video-Worksheet
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Rosalind Franklin photographed her fifty-first X-ray diffraction pattern of deoxyribosenucleic acid, or DNA, on May 6, 1952, at King’s College London in London, England. By displaying the way a beam of X-rays scattered off a pure fiber of DNA, Image 51, or Photo 51, revealed details about DNA’s three-dimensional structure. After scientists concluded that DNA contained genes, Franklin took Photo 51. Without Franklin’s awareness, Franklin’s colleague Maurice Wilkins showed James Watson and Francis Crick Photo 51. That picture was used by Watson and Crick to construct their DNA structural model. Watson, Crick, and Wilkins shared the Nobel Prize in Physiology or Medicine in 1962, after Franklin died, for their discoveries about DNA. Franklin’s Photo 51 aided scientists in learning more about DNA’s three-dimensional structure and understanding its role in heredity.
Scientists use X-ray crystallography to determine the three-dimensional structure of a crystal, which is the method Franklin used to construct Photo 51 of DNA. Crystals are solids made up of regular, repeating atom units. Since their solid forms consist of atoms arranged in a regular pattern, some biological macromolecules, such as DNA, may form fibers suitable for X-ray crystallography study. Photo 51 made use of DNA fibers, which were first developed in the 1970s. An X-ray crystallography is done by inserting a purified fiber or crystal in an X-ray tube. X-rays are produced by the X-ray tube and hit the purified material. Electromagnetic waves with a shorter wavelength and higher frequency than visible light are known as X-rays. X-rays can pass through a crystal and interfere with the electrons of the atoms inside the crystal due to their short wavelength. As X-rays interact with electrons in a crystal, the X-rays scatter, or diffract, at angles that show the crystal’s structure or arrangement of atoms. The X-rays scatter and enter a film placed behind the crystal, leaving a pattern of dark marks. Scientists can deduce the crystal structure from the pattern of dark marks on the video.