which of these are polar? CH3-CHCl2, CH2Cl-CH2Cl OR BOTH
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which of these are polar? CH3-CHCl2, CH2Cl-CH2Cl OR BOTH
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- Name the following molecular: CH3-CH2-CH2-CH2-CH2-CH-OHThe amino acid arginine ionizes according to the following scheme: NH, NH2 NH2 H NH, C=N C=N C=N C=N-H pk = 2.17 -H pK. = 8.99 -H pK = 125 -H* H. NH NH NH NH H (CH,)a H (CH), +H* (CH)a (CH,)a H,N-C-coo- +H* +H* H-N*-C-COOH H-N-C-Co- H,N-C-co- H. нн H. H II II IV (a) Calculate the isoelectric point of arginine. You can neglect contributions from form I. Why? (b) Calculate the average charge on arginine when pH = 9.20. (Hìnt: Find the average charge for each ionizable group and sum these together.) (c) Is the value of average charge you calculated in part b reasonable, given the pl you calculated in part a? Explain your answer.Lefer to the figure showing the molecular structure of dimethylmercury. H–C-Hg C-H H. Exposure of human skin to a single drop of dimethylmercury can lead to death, as it is highly poisonous and passes easily cell membranes. Based on its structure, why is it able to pass so easily through cell membranes? I-0-I IICIH
- These five anions: OH-, SH-, RO-, RS- and RNH- Please list out weakest to strongest in terms of nucleaophilicity and basicity separately.Which of the following shows the reaction by which valine and leucine form a peptide bond H. H. H O -COO H2N-C-C-NH- C- C-OH + HO CH2 CH,SH ČH3 А. C. CH(CH)2 H. HN-C-C-NH-C- C-OH H,N-CH-C- + H,O HC-C-H CH2 CH2 H CH3 CH H,C-C-H CH(CH3)2 CH В. D.OOC H₂C 1 H₂C H₂C H₂C-C HC H₂C NH N CON HN C COO™® 1 CH₂ CH₂ C-CH₂ CH C-CH, G=CH₂ "ooc H₂C H₂C H₂C H₂C-C HC 0-N H₂C Fe(ll) COO 1 CH₂ CH₂ C-CH₂ C-CH₂ G=CH₂ The structure below is Fe- protoporphyrin IX. It is linked by bridging groups to form porphyrin ring. Addition of Fe to the porphyrin rings produces the heme group. Identify the group of atoms that can for H-bond interaction with water.
- choices:purine or pyrimidine ribose or deoxyribose 1-9? hydrogen or phosphodiester 1-9? an -OH or no -OH 1-9?This molecule is closely related to which the monomer of NH2 II II -0-P-0-P-0-P-0-CH2 Adenine H H Triphosphate group OH ÓH 5-carbon sugar O Carbohydrates O Proteins O Lipids O Nucleic acids Note: Clicking any button other than the Save Answer button wilI NOT sa 7:17 PM 69% 1 4) ( P ENG W O Type here to search 口 A 1/25/2021 미므 C F5 PrtSc Insert Delete Esc F1 F2 F3 F4 F6 F7 F8 F9 F10 F11 F12 $4 & Backspace 1. 2 3 4.Which of the following differentiates chitin with cellulose? Chitin has the alpha (1-4) glycosidic linkage O Chitin has an amino derivative of glucose O Chitin is a polysaccharide and cellulose is a disaccharide Chitin has the beta (1-4) glycosidic linkage.
- Which of thefollowing compounds represent the LIST OXIDIZED and REDUCED class of organic compounds and explain why? H H CH3 H H --- C1 --- C2 --- O --- H H--- C --- C2 --- H H H H C2H5 H :0: :0: H--- C1 --- C2 ---H H--- C1 --- C2 ---0 --- H H H :0 :Which of the following is cytidine? cytosine + guanine ribose + cytosine + phosphate group ribose + cytosine cytosine + deoxyriboseTitration of alanine by a strong base, for example NaOH, reveals two pk's. Which is the titration reaction occurring at pK1 (pK1 = %3D 2.34)? O-NH2 + COH →-NH + H2O O-COOH + OH →-CO + H20 -COOH + -NH2 → -COO" + -NH2+ -CoO +-NH2* → -COOH +-NH2 O -NH3* + OH →-NH2 + H2O