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

Multiple Choice Questions

1. Why did Watson believe that DNA would be a two-chain?
(a) Pauling's model was wrong
(b) Things in biology come in pairs
(c) Crick had found 2 chains in previous research
(d) Picture showed 2 chains

2. Which of the following words best describes how the authors of the chemistry book had chosen the structures of the bases?
(a) Arbitrarily
(b) Scientific models
(c) Crystallographic photographics
(d) After much indepth research

3. Whom did Bragg invite to come see the new model?
(a) Maurice
(b) Pauling
(c) Rosy
(d) Todd

4. Which of the following best describes how Watson felt upon realizing that Pauling's model was flawed?
(a) Relieved
(b) Enthusiastic
(c) Surprised
(d) Dejected

5. What does Watson hope to learn more about as he studies TMV?
(a) RNA
(b) DNA
(c) Crystallography
(d) X-rays

6. Who did Watson go to tell about Rosy's B photograph?
(a) Crick and Max
(b) Bragg and Max
(c) Pauling and Crick
(d) Bragg and Crick

7. What did Bragg finally allow Watson to do?
(a) Allow him to work with Pauling to refine his model
(b) Move to a new lab where he will continue his work on RNA
(c) Start working on DNA again
(d) Invite Maurice to join Watson on the project

8. Where was Pauling's lab?
(a) Pasadena
(b) London
(c) Stockholm
(d) New Jersey

9. Which word best describes Watson's feelings at the idea of working with bases in pairs?
(a) Enthusiastic
(b) Egotistical
(c) Downtrodden
(d) Depressed

10. Who confirmed Watson's finding that TMV was indeed a helix?
(a) Maurice
(b) Pauling
(c) Crick
(d) Rosy

11. What did Watson and Crick have to wait for?
(a) Rosy to leave King's lab
(b) Changes to be made to the backbone
(c) Maurice to provide them with new information
(d) Base models to be built

12. When Watson constructed models of the bases what was the same about a pair?
(a) Shape
(b) Number
(c) Appearance
(d) Size

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

14. What did Watson reveal made being a scientist harder for Rosy than for others?
(a) Disagreeing with others
(b) Having a bad attitude
(c) Being a woman
(d) Stealing and not sharing work with her boss

15. What shape was Watson trying to prove TMV was?
(a) Cylindrical
(b) Octagonal
(c) Helical
(d) Hexical

Short Answer Questions

1. What event diffused the tension and heat between Rosy and Watson?

2. Where did Watson see Chargaff for the second time but they did not speak?

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

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

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

(see the answer keys)

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