Help M 81% Ch) Sun 4:56 PM a C3 shanice ace/video/vdka257323/03/21-delinquent-ju

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Help M 81% Ch) Sun 4:56 PM a C3 shanice ace/video/vdka257323/03/21-delinquent-justin 0 . (5 a Unit 1 Study Questions [C-, a-search in Document Insert Design Layout References Mailings Review View Arial 0 142. 1U.abe X2 X2A. ,.A. Styles Styles Pane 4. What insights into DNA structure did Watson and Crick derive from the findings of Chargaff? 5. What insights into DNA structure did Watson and Crick derive from the findings of Franklin? 6. What insights did Watson and Crick contribute to their "model" or description of DNA structure? 7. What is the repeating subunit (monomer) of DNA? What is the structure of this subunit? 8. How many different kinds of monomers are there in DNA? How do they differ from one another? How are they alike? 9. What is complementary base pairing? What are the "rules" of complementary base pairing? Why is complementary base pairing an important feature in the cell? 10. What was the design of Hersey and Chase's experiment (question, hypothesis, subjects, groups, and variables)? 11. What were the results of Hershey and Chase's experiment? What did Hershey and Chase conclude from these results? 12. What are the 2 major functions of DNA in the cell? 13. What are the differences between RNA and DNA? DNA REPLICATON 14. How is DNA replicated in a cell? 15. What enzymes are involved? What is the role/contribution of each? 16. Why does replication of the two strands go in opposite directions? is 'proofreading' in the context of DNA replication? Why is this important? 18. Why is DNA replication said to be semi-conservative? What is the value of this to the cel? 128% e1of2 946 Words English (US) Screen Shot Screen Sh Show All × ScreenShot Abnormal PP C 3 pptx -02...7.15 AM 2017-09. .7.33 PM 2017-08...4.2

Explanation / Answer

4. Chargaff: A always pairs with T and G always pairs with C.

Structure is antiparallel.

5. Franklin:

i) 4 cm length and 2 nm width.

ii) helical shape

iii) did a complete turn after every after 3.4 nm

6. Watson and Crick:

i) DNA is double stranded.

ii) width is 2 nm

iii) A always pairs with T

iv) G always pairs with C

v) complementary molecule.

7. 1 monomer = 1 nucleotide

1 subunit = sugar + phosphate + nitrogen base.

8. Monomers: 4 monomers

Two pyrimidines = cytosine and thymine

Two purines = Adenine and guanine

They have different recognising codes viz A,T, C, G.

They are same as they have same sugar phosphate.

9. Adenine pairs with Thymine

Guanine pairs with Cytosine

Double ring pairs with single ring.

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