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Questions and Answers
What did Watson and Crick deduce from the width of the DNA helix?
What did Watson and Crick deduce from the width of the DNA helix?
- DNA is present in the nucleus of all cells
- DNA was made up of two strands forming a double helix (correct)
- DNA was coiled around proteins called histones
- DNA controls all the chemical changes in cells
Who was responsible for the X-ray diffraction photograph of DNA that enabled Watson to deduce the helical structure of DNA?
Who was responsible for the X-ray diffraction photograph of DNA that enabled Watson to deduce the helical structure of DNA?
- Histones
- Watson
- Crick
- Rosalind Franklin (correct)
What did Franklin conclude about the sugar-phosphate backbones of DNA?
What did Franklin conclude about the sugar-phosphate backbones of DNA?
- There were two antiparallel sugar-phosphate backbones (correct)
- The backbones paired like with like (A with A, and so on)
- The backbones consisted of basic amino acids
- The backbones were coiled around histones
What did pairing a purine with a pyrimidine result in, according to Watson and Crick?
What did pairing a purine with a pyrimidine result in, according to Watson and Crick?
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Where is DNA present in living organisms?
Where is DNA present in living organisms?
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