a) Sort compounds 1a to 1c in order of increasing melting point and briefly justify yourordering.b) Chemically classify each named compound seen below, 1a through 1k, by writing itslabel in the appropriately labelled box.c) Which amino-alcohol, incorporated within a lipid structure, will lead to a neutral lipidat pH 7? Which will lead to a negatively-charged lipid? Bear in mind that the pk ofan ammonium cation is between 9 and 10 and that of carboxylic acid between 2 and5.1b1c1d1e1fOHOHOHNHNHOOO0 0=0=P-0O1i1a1gHO0:1hHO1jHO+NH3НОNH3-OH1kHO OHO

Phospholipids are a group of lipids that constitutes of two fatty acids, a glycerol unit and a…

Answered: a) Sort compounds 1a to 1c in order of…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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This amino acid is: (Note that the non-ionized form is shown; remember that backbone groups are irrelevant to classification) a) Polarized (+) charged b) Nonpolar c) Polar and (-) charged d) Polar uncharged
Draw the following Lipids in: A) Condensed (detailed) Structure, B) its Block Diagram.C) Show/Indicate the type of linkages per structure (put an arrow). 3) Glycerophospholipid (use glycerol, 2 stearic acid, phosphate, and serine for its amino alcohol)
What is the predominant ionic form of ribose-5-phosphate at physiological pH? Would ribose-5-phosphate be a good biological buffer for cells?
You are studying the tripep de Lys-Val-Thr. a) Could you use the absorbance at 280 nm to determine the concentra on of this tripep de? Briefly explain your answer. b) Show how the charge of this pep de would change at different pHs.
1)Ubiquitin is a small protein with a monoisotopic mass of 8560 Da. a) Electrospray ionization of this small protein typically results in major charge states of +8, +9, +10, +11, +12, and +13. Using this information, complete the table below, assuming the charges on each come from protonation. Report mass and m/z values to the ones place. b) Using the data you entered in the table, sketch an expected ESI-MS spectrum for ubiquitin. Label each peak with its charge state. What do you notice about the spacing of peaks along the x-axis. c)The figure shows an experimentally obtained electrospray mass spectrum for ubiquitin. Compare this spectrum to the spectrum you predicted. Are there any differences? If so, what might cause these differences?
Although the first two carbons of fructose and glucose are identical in structure to DHAP and GADP (from glycolysis), DHAP and GADP equilibriate on their in solution to favor the ketone over the aldehyde, while fructose and glucose do not. Why? a)The larger size of the molecule sterically hinders the isomerization b)The larger sugars have more OH groups which hydrogen bond and disrupt isomerization c)The larger sugars cyclize, and there is no carbonyl to isomerize in the cyclic form d)The larger sugars cyclize, and in the cyclic form the hydrogen bonding is very strong e)The larger sugars are less soluble in water than the smaller sugars
The sugar molecules shown below are a) Enantiomers b) Epimers c) Anomers d) Diastereomers
The isoelectric point of an amino acid is the point where; O a) the amino acid carries no net electrical charge b) the a-carboxylic acid is protonated and the a-amino group is unprotonated c) ) the pKa of the a-carboxylic acid is the same as the pK, of the a-amino group a d) the solubility of the amino acid is maximized e) the a-carboxylic acid and the a-amino group are both half protonated MacBo 80 000 esc F1 F2 F3 F4
The correct systematic name for the fatty acid below is: a) 3 octadecatrienoic acid b) 9 octadecatrienoic acid c) 3,6,9 octadecatrienoic acid d) 9,12,15 octadecatrienoic acid e) None of the above
2) Consider the following disaccharide which was formed from the breakdown of a polysaccharide found in plant material. ОН Glycosidic linkage: H H OH H H НО H H. OH H. ОН OH H НО H ОН a. Label the glycosidic linkage above in the following format: a/B(# → #) b. Would you expect this disaccharide to have been formed from amylose or amylopectin? c. Describe at least two chemical tests that would give insight into the structure of this disaccharide, assuming you've isolated it and wanted to elucidate the structure from scratch. Include detail on not only the tests you would use but what results you would expect to get given the structure above. Assume you can analyze the structure of any monosaccharide you get from your chemical tests.
Modify the mannose structures provided to show the structure of a disaccharide formed from two mannose units joined by a 1 → 6-B-glycosidic linkage. CH₂OH Снон H ОН H Он Н H Он он OH Он Он H он Н H H H H Х G
3) After watching the video convert the monosaccharides from a Fischer to a Haworth Projection. a) Convert D-mannose to its a-pyranose. CHO HOH HO H H OH -OH CH₂OH PH 3 D-mannose b) Convert L-galactose to its B-pyranose. H 1 CHO HOH OH H-OH HO-H 6CH₂OH L-galactose

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