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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 20.

Multiple Choice Questions

1. What was Watson's main scientific interest?
(a) DNA
(b) The scientific process
(c) RNA
(d) Human relations

2. What could be used to rule out some false starts of potential DNA structures?
(a) 3-dimensional figures of DNA
(b) Nucleotides
(c) Binding agents
(d) X-ray pictures of DNA crystals

3. Which of the following is the best term for chains of nucleotides?
(a) Multinucleotide chains
(b) Seminucleotide chains
(c) Polynucleotide chains
(d) Patterned nucleotide chains

4. Where did Watson see Chargaff for the second time but they did not speak?
(a) In Stockholm at a conference on crystallography
(b) Cambridge at the lab
(c) London at a conference with Pauling
(d) International Biochemical Congress in Paris

5. By the end of chapter twelve, how many chains had Watson and Crick determined would fit with the X-ray images?
(a) 2
(b) 3
(c) 5
(d) 4

Short Answer Questions

1. Who convinced Bragg that Watson and Crick should not be working on the problem of the structure of DNA?

2. How did Pauling discover his ?-helix structure?

3. How many types of nucleotides are in DNA?

4. Which of the following did Watson and Crick add to the models which already existed within the Cambridge lab?

5. What began to interest Crick after his argument with Sir Lawrence?

(see the answer key)

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