The Double Helix Test | Final Test - Easy

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This test consists of 15 multiple choice questions and 5 short answer questions.

Multiple Choice Questions

1. What did Todd say about the sugar-phosphate backbone chemistry in the model?
(a) It was correct
(b) It needed to be fixed slightly
(c) It was surprising
(d) It was incorrect

2. Where was Pauling held up when he was on his way to speak at the conference?
(a) London
(b) Stockholm
(c) Airport
(d) Washington, DC

3. Which of the following best describes Maurice and Rosy's working relationship?
(a) Collegial
(b) Supportive
(c) Difficult
(d) Symbiotic

4. What had Watson asked of Delbruck?
(a) Not to tell Pauling about the new model
(b) To display the model at Cal-Tech
(c) To be sure and tell Pauling
(d) To spread the word throughout the scientific community

5. What did Watson continue to believe the problem was?
(a) Acid level
(b) Bases
(c) Backbone
(d) Chain number

6. Whose work did Crick believe was a key to understanding DNA?
(a) Rosy's work
(b) Pauling's work
(c) Watson's work
(d) Chargraff's work

7. What was the problem with the idea that the bases were pairs?
(a) There were an odd number of bases
(b) The sides weren't identical
(c) The bases weren't all the same sides
(d) Pairing eliminated the idea of 3 chains

8. What did Watson diverge from his study of DNA to study?
(a) Coils of protein helixes
(b) Crystallograhy X-rays of RNA
(c) Models of proteins
(d) Sexes of bacteria

9. Why was Watson trying to make crystallographic X-rays of TMV?
(a) To showTMV had helically stacked protein
(b) To show that TMV had DNA
(c) To show that the work was worthwhile
(d) To show that RNA was the same as DNA

10. When would Watson go to Cal-Tech?
(a) Next year
(b) Never
(c) Right away
(d) Within the next five years

11. How does Watson end his book?
(a) By discussing what the various people involved in the discovery of the structure of DNA are doing at the time of the writing
(b) By taking all of the credit in the discovery of the structure of DNA
(c) By sharing the credit in the discovery of the structure of DNA with Crick
(d) By reporting the importance of his discovery

12. Where had Watson gotten the structures for the bases?
(a) From Watson's own research into bacteria
(b) From Rosy's photographs
(c) From Pauling's research
(d) Out of a chemistry book

13. Which describes how Rosy seemed when Watson went to talk to her at King's lab about Pauling's faulty model?
(a) Supportive
(b) Excitied
(c) Confrontational
(d) Resigned

14. What other evidence was discovered about DNA?
(a) DNA was all exactly the same
(b) All DNA lacked cystosine
(c) All DNA was the same as RNA
(d) the identification of a form of cytosine in a kind of DNA previously thought to lack cytosine

15. What was the fundamental flaw in Linus Pauling's model of DNA?
(a) He relayed that there were four helixes
(b) The phosphate molecules were not ionized
(c) The phosphate molecules were ionized
(d) He could not identify the number of helixes

Short Answer Questions

1. How did Watson feel about Rosy's reaction to the new model?

2. Which of the following best describes how Watson felt upon realizing that Pauling's model was flawed?

3. Who shared an office with Watson and Crick?

4. Which of the following was why Pauling never arrived in London?

5. Who checked Watson and Crick's chemistry on the model?

(see the answer keys)

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