FLIPPED CLASSROOM DNA, THE MOLECULE OF LIFE 5 4. The relative amount of wasn t different from the relative amount of in all the organisms studied. a. guanine cytosine; b. thymine guanine; c. adenine thymine; d. both a. and c. are correct The Discovery of the Structure of DNA posted by OpenMind Rosalind Franklin Before wAtchinG 5. The helix structure of the DNA . a. had been known since the beginning; b. was explained thanks to the studies of a woman; c. was discovered by Erwin Chargaff; d. was discovered by Watson and Crick 7 6. The Nobel Prize for this discovery was awarded Answer the following questions. in the early . a. 1940s; b. 1950s; c. 1960s; 1. Do you remember what DNA stands for? 2. Can you mention some applications of the studies on DNA? 3. Why is it called the molecule of life? After wAtchinG 9 whiLe wAtchinG 8 watch the video and choose the correct answer. 1. The presence of DNA in our cells was discovered by . a. two researchers in 1953; b. several researchers throughout many years; c. some scientists in Cambridge; d. two friends 2. It seemed that all the genetic information was determined by four compounds. a. incredible; b. obvious; c. impossible; d. incorrect 3. Watson and Crick investigated the of DNA. a. b. c. d. composition history structure origin d. 1970s watch the video again and answer the following questions. 1. In which part of the cell is DNA enclosed? 2. Can you name the four compounds which make up DNA? 3. Who was Rosalind Franklin? 4. How did she help figure out the structure of DNA? 5. What was the perfect union between adenine and thymine, and guanine and cyanine? 6. What further discoveries were made later? 7. Was Rosalind Franklin awarded the Nobel Prize? 8. Who was Morris Wilkins? moVinG fUrther 10 historically, science has been a maledominated field. Despite dramatic increases in representation over the last 40 years, globally fewer than 30 percent of researchers today in science, technology, engineering and mathematics (stem) careers are women. surf the net and look for other women who have not seen their work recognized as it should have been. more wonders of chemistry 93