9L.12 Carbohydrates: Draw the structures of the two products obtained when lactose is subjected to methylation followedby acidic hydrolysisPart ADraw the structures of the two products obtained when lactose (figure below) is subjected to methylation followed by acidic hydrolysis.Interactive 3D display modeHO.HO.OHкаOHHOOHOHишоНОIIIOОНIf you draw your answer as a Fischer projection, make sure the horizontal bonds are in bold and the H atoms are shown also.НН7. TOH notHOOH

Lactose is a disaccharide composed of a and a . The C1 of forms a glycosidic bond with C4 of…

Answered: Carbohydrates: Draw the structures 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

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Problem 1P

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Draw the step-by-step procedure of linear form (Fischer Projection) of a- D Glucose and B- D Glucose to Haworth. anomeric carbon H-C-OH HO-C-H H-C-OH H-Č-OH anomers of glucose HO-C-H но-с—н H Č-OH H-C-OH H-ċ-o H-C-0- CH,OH ČH,OH a-D-glucose В-D-glucose
In the space provided, draw a Haworth projection for the beta anomer of the following monosaccharide Fischer projection. CHO HO-C-H HO-C-H HO-C-H H-C-OH CH,OH
b. Identify (name) each of the following two monosaccharides A and B. НО ОН ОН По A ОН -ОН но- Но Но ОН в ОН c. The disaccharide lactose is built up by one D-galacto-and one D-gluco monosaccharide unit. Draw L-galactose in the Fischer projection (open) form and in its most stable pyranose ring conformation form and determine if the latter is a ¹C4 or a 4C₁ conformation.
Describe the important biochemical properties of carbohydrates and why carbohydrates would be considered polar molecules. A▾ B I X @ F 7
For disaccharide b, give the monosaccharide units produced by hydrolysis, the type of glycosidic bond, and the name of the disaccharide, including a or 8. CHOH CH,OH H. OH H. HO Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help galactose and fructose When the disaccharide is hydrolyzed, the monosaccharide units that are produced are two molecules of fructose two molecules of glucose The type of glycosidic bond shown for the disaccharide in thin part is 8-1,4 The name of the disaccharide including a or A in B-1,2 a-1,4 a- 1,2 a-lactose B-lactose a-maltose B-maltose
e. Glycosidic linkage between ß glucose The main chemical structure difference between ribonucleic acid and deoxyribonucleic acid is in the ribose sugar carbon number Answer: on Next page age FUJITSU
Which is the Haworth projection for the 8anomer of the straight sugar shown below? CHO H OH HOH HO H H OH CH,OH lb. CHOH HỌ CHOH HO OH H OH OH ld. OLOH HO CHOH H HO HO OH OH
Н. Based on what you know about the classification and structure of galactose, HO- what possible results would you obtain if H- ОН Но- H- H. но- you were to perform the following tests? (+) negative (-) and explain in one sentence) ОН (indicate whether positive or ČH2OH Test Result Explanation Benedict's Barfoed's Seliwanoff's lodine Test I I
Draw the amino acid product that results from a transamination reaction involving pyruvate and glutamate, shown in the image below. Draw the product as it would occur at the pH of most body fluids, including all charges. You do not need to draw the other product of the reaction. O NH3 3D CH3-C-C-o-+ 0-CH-CH CH2-C-0--→? pyruvate glutamate Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. Include all hydrogen atoms and charges. > View Available Hint(s) CONT. H. N. NV CI Br 1] -C- C1 SI
Cyclic forms of D-glucose: Haworth formula The furanose and pyranose forms of D-glucose can be presented using Haworth formula. The following templates are used for this formula. Note the numbering of the carbon atoms and the anomeric carbon (this carbon defines the alpha and beta isomer). Furanose template (furan) Pyranose template (pyran) anomeric carbon anomeric carbon Compare the Fisher and Haworth formula of D-glucofuranose and D-glucopyranose. Notice that the groups attached to C-1, C-2, and C-3 on the left side of the Fisher formula are written above the plane of the furanose template. Fisher formula Haworth formula H FOH H-2 HOH,č 5 -OH FOH- H HO-3H 4 он H 1 H-4 H-5 H OH 3 6 CH2OH H OH Alpha-D-glucofuranose Alpha-D-glucofuranose HOH2C- он OH но H FOH- OH Но H H. OH H ČH2OH Beta-D-glucofuranose Beta-D-glucofuranose
Complete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D- Xylose
Draw the structure and titration curve of Cysteine by hand. Make sure to label the x- and y-axes, include pK values, and other details in your curve.

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Carbohydrates: Draw the structures of the two products obtained when lactose is subjected to methylation followed by acidic hydrolysis