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1. Benedicts test is used to identify reducing sugars. What is the correct principle? A. Heating of simple carbohydrate is added with Copper (I1) forming copper (1) oxide which is an orange/ brick red complex. B. Polviodide ions is added to carbohydrate forming a black colored absorption complex, dextrin. C. Carbohydrate is added to H2504 undergoing dehydration and creating furfural which is combined with alpha paphtol creating a purple colored complex. D. None of the above.

1. Benedicts test is used to identify reducing sugars. What is the correct principle? A. Heating of simple carbohydrate is added with Copper (I1) forming copper (1) oxide which is an orange/ brick red complex. B. Polviodide ions is added to carbohydrate forming a black colored absorption complex, dextrin. C. Carbohydrate is added to H2504 undergoing dehydration and creating furfural which is combined with alpha paphtol creating a purple colored complex. D. None of the above.

Biochemistry
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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1. Benedicts test is used to identify reducing sugars. What is the correct principle? A. Heating of simple carbohydrate is 5. A technique in genetic testing in which DNA fragments are amplified to more useful. added with Copper (II) forming copper (1) oxide which is an orange/ brick red complex. A. Restriction endonucleases B. Cloning C. Probes D. Southern blotting B. Polviodide ions is added to carbohydrate forming a black colored absorption complex, dextrin. C. Carbohydrate is added to H2504 6. The wrong monosaccharide combination undergoing dehydration and creating is. A. Sucrose = Fructose + galactose B. Lactose = galactese + glucose C. Maltose = Glucose + glucose D. All of the above. furfural which is combined with alpha naphtol creating a purple colored complex. D. None of the above. 7. Arrange the correct sequence in southern 2. What reagent is added to a sugar- jovertass solution in order to quantify its reaction seectrophotometrically? A. Benedict's solution. B. Biuret's reagent. C. Bile esculin reagent. D. Rinitrosalicyxlis acid. blotting. I. DNA extracted from white cells and are cleaved. II. bubridization with p-labeled probe. II. Agarose gel electrophoresis. IV. Blotting technique V. Expose of x-ray film. 3. Determine the ph of a 0.50 M NAH2PO4 and 0.10 M N22HPO4 solution. Rka is 7.21. A. I, II, II, V, IV B. I, II, III, IV, V. C. I, IV, II, V, II D. I, II, IV, II, V. А. 5.5 В. 6.5 С. 4.5 D. 7.5 8. Determine the pH of a 30 g NaH2PO4 (120MM) and a 90 g N22HPO4 (142|| MM) solution with a gka of 7.21 and total volume of 1L. A. 6.40 В. 6.61 C. 7.40 D. 7.61 4. Determine the pH of a 50 g NaH2PO4 (120MM) and a 100 g N22HPO4 (142 MM) solution with a pka of 7.21 and total volume of 1 L. A. 6.43 В. 6.50 C. 7.43 D. 7.50
Transcribed Image Text:1. Benedicts test is used to identify reducing sugars. What is the correct principle? A. Heating of simple carbohydrate is 5. A technique in genetic testing in which DNA fragments are amplified to more useful. added with Copper (II) forming copper (1) oxide which is an orange/ brick red complex. A. Restriction endonucleases B. Cloning C. Probes D. Southern blotting B. Polviodide ions is added to carbohydrate forming a black colored absorption complex, dextrin. C. Carbohydrate is added to H2504 6. The wrong monosaccharide combination undergoing dehydration and creating is. A. Sucrose = Fructose + galactose B. Lactose = galactese + glucose C. Maltose = Glucose + glucose D. All of the above. furfural which is combined with alpha naphtol creating a purple colored complex. D. None of the above. 7. Arrange the correct sequence in southern 2. What reagent is added to a sugar- jovertass solution in order to quantify its reaction seectrophotometrically? A. Benedict's solution. B. Biuret's reagent. C. Bile esculin reagent. D. Rinitrosalicyxlis acid. blotting. I. DNA extracted from white cells and are cleaved. II. bubridization with p-labeled probe. II. Agarose gel electrophoresis. IV. Blotting technique V. Expose of x-ray film. 3. Determine the ph of a 0.50 M NAH2PO4 and 0.10 M N22HPO4 solution. Rka is 7.21. A. I, II, II, V, IV B. I, II, III, IV, V. C. I, IV, II, V, II D. I, II, IV, II, V. А. 5.5 В. 6.5 С. 4.5 D. 7.5 8. Determine the pH of a 30 g NaH2PO4 (120MM) and a 90 g N22HPO4 (142|| MM) solution with a gka of 7.21 and total volume of 1L. A. 6.40 В. 6.61 C. 7.40 D. 7.61 4. Determine the pH of a 50 g NaH2PO4 (120MM) and a 100 g N22HPO4 (142 MM) solution with a pka of 7.21 and total volume of 1 L. A. 6.43 В. 6.50 C. 7.43 D. 7.50
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