6. On the ribose molecule to the right: • Number the 5 carbons from 1' to 5', starting with the carbon to the right of the oxygen within the ring. CH₂OH O H • Circle the 3' and 5' carbons. These are where the phosphodiester linkages (covalent bonds between nucleotides) will form. -C H H H O-H о H H • Put a square around carbon 1'. This carbon bonds to the nitrogenous base! NH 7. Label this diagram showing the left side of a DNA molecule: N • Write in 3' and 5' in their proper place. (How do you know which end is 3' and which end is 5'? Find the oxygen in the 5-carbon sugar ring, it's always 'pointing' toward the 5' end!) HO-CH2 O- H₂N N Number all the carbons on one of the pentose sugars 0=2-0 о CH2,0 Label the phosphodiester linkages • Circle one nucleotide • Label the three parts of the nucleotide. • Indicate if the nitrogenous bases are purines or pyrimidines Label the phosphate group. Chapter 14 Study Guide 0 0- -CH2O ОН H₂N N

The molecular weight of alanine at pH = 7.0 is 89.1 g/mol. Calculate the molecular weight of the dipeptide Ala-Ala at pH = 7.0. If you think that not enough information has been provided to answer this question, or that none of the given answers is a reasonable approximation, choose choice G. A. 7.0 g / mol B. 89.1 g/mol C. 890.1 g/mol D. 178.2 g/mol E. 200 g/mol F. 160.2 g/mol G. None of these choices are valid.

oleic acid, linoleic acid and arachidonic acid d. arachidonic acid e. None of these are solids at room temperature. C. 21. The portion of the molecule that is boxed is called otc(CH2)16CH3 ofc(CH2)16CH3 ofċ(CH2)16CH3 || a. the amino acid backbone. b. the glycerol backbone. c. the phosphate backbone. d. a saturated fatty acid. an unsaturated fatty acid. e.

Classify this lipid Group of answer choices a. glycerophospholipid b. wax c. triacylglycerol d. sphingomyelin

to make a tablet of aspirin, it requires 249 mg of salicylic acid. if the chemist purchased 9.0 x 10^-3 OZ of salicylic acid, are these enough to make one table of aspirin?

Draw an example of each of the followings: 1- a simple sugar, 2- an acid sugar, 3- an alcohol sugar, 4- a deoxy sugar, 5- a saturated fatty acid, 6- an unsaturated fatty acid, 7- a triglyceride, 8- a phospholipid, 9- a steroid, 10- an amino acid, 11- a small peptide, and lastly 12- a DNA nucleotide and 13- an RNA nucleotide

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Draw the resulting structure when a nucleic acid bonds with an identical nucleic acid within a biopolymer strand. For your convenience, part of each nucleic acid has been pre-drawn for you. Fill in all missing substituents. Ensure that your drawing is for DNA. H. N. 'NH2 || O-P-0- H. NH N. NH2 H. H.

7. Draw structure for the following compounds. D- fructose C. L-Mannose a - lactose g. B-D- ribose . نه نه ن a. e. i. Small section of amylopectin b. B-D- Galactose d. ß- maltose f. D-2-deoxyribose h. Small section of amylose j. Sucrose

3. For this short DNA segment, a. identify the 5' end and the 3' end of the molecule. b. circle the atoms that comprise the backbone of the nucleic acid chain. c. write the nucleotide sequence of this DNA segment. HN o=P-OCH, CH, NH o=P-OCH, HN o=P-OCH, но