BIOCHEMISTRY REVIEW Overview of Biomolecules Chapter 9 Nucleotides.

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Presentation transcript:

BIOCHEMISTRY REVIEW Overview of Biomolecules Chapter 9 Nucleotides

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GENERAL FEATURES OF NITROGENOUS BASES AROMATIC CHARACTER / STABLE RINGS UNCHARGED AT pH = 7.0 PLANAR OR NEARLY PLANAR HYDROGEN BOND FORMATION TAUTOMERIC FORMS 6

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Are You Getting It?? ____________________________________________________ Which characteristics are found in both purines and pyrimidines? (multiple answers) a) They both are heterocyclic. b) They both contain two rings. c) They both have aromatic properties. d) They both become protonated at pH=7.0. e) They both contain groups that form H-bonds. 10

Are You Getting It?? ____________________________________________________ _____________________Answer_________________________ Which characteristics are found in both purines and pyrimidines? a) They both are heterocyclic. b) They both contain two rings. c) They both have aromatic properties. d) They both become protonated at pH=7.0. e) They both contain groups that form H-bonds. 11

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Are You Getting It?? ____________________________________________________ Which characteristics will uridine have? (multiple answers) a) It contains a pyrimidine. b) It contains deoxyribose. c) It contains a hemiacetal bond. d) It is stable in base. e) It contains a pyranose. f) It contains a 1,1’-N-glycosidic bond. 18

Are You Getting It?? ____________________________________________________ _____________________Answer_________________________ Which characteristics will uridine have? a) It contains a pyrimidine. b) It contains deoxyribose. c) It contains a hemiacetal bond. d) It is stable in base. e) It contains a pyranose. f) It contains a 1,1’-N-glycosidic bond. 19

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Are You Getting It?? ____________________________________________________ Which characteristics do nucleotides have? (multiple answers) a) They all contain a nitrogenous base. b) They all contain D-ribose. c) They all contain one phosphate group. d) They all will be negatively charged at pH=7.0 e) They all will be broken down in acid. f) They all are found in DNA. 27

Are You Getting It?? ____________________________________________________ _____________________Answer_________________________ Which characteristics do nucleotides have? a) They all contain a nitrogenous base. b) They all contain D-ribose. c) They all contain one phosphate group. d) They all will be negatively charged at pH=7.0 e) They all will be broken down in acid. f) They all are found in DNA. 28

Are You Getting It?? ____________________________________________________ Which characteristics does ADP have? (multiple answers) a) It contains deoxyribose. b) It contains two phosphate groups. c) It has a charge of -3 at cellular pH. d) It contains a purine. e) It contains a furanose. f) It is the same compound as adenosine. 29

Are You Getting It?? ____________________________________________________ _____________________Answer_________________________ Which characteristics does ADP have? a) It contains deoxyribose. b) It contains two phosphate groups. c) It has a charge of -3 at cellular pH. d) It contains a purine. e) It contains a furanose. f) It is the same compound as adenosine. 30

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