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

Multiple Choice Questions

1. Which of the following was the problem with Pauling's model?
(a) DNA base was not acidic
(b) DNA base was now an acid
(c) DNA acid was not acidic
(d) DNA acid was too acidic

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

3. Which of the following is the best definition of the term untenable?
(a) Empty
(b) Justified
(c) Able to be possible
(d) Unable to be defended

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

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

Short Answer Questions

1. How did Watson spend the time while he waited for the machine shop to construct the necessary parts?

2. What had Rosy surrounded DNA with in the B photograph?

3. Who was taken with Watson's sister?

4. Which of the following words best describes how the authors of the chemistry book had chosen the structures of the bases?

5. Which term did Maurice use to describe the DNA structure?

(see the answer keys)

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