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1. (2 pts) What is produced when polysaccharides and disaccharides are hydrolyzed? 2. (2 pts) A...
Pre-Lab Questions (PLQ) for Exp. 9 Carbohydrates (sugars) Use the information in Exp. 9 to answer the following que...
Pre-Lab Questions (PLQ) for Exp. 9 Carbohydrates (sugars) Use the information in Exp. 9 to answer the following questions 1. (2 pts) What is produced when polysaccharides and disaccharides are hydrolyzed? 2. (2 pts) A monosaccharides can exist as an open chain or as a cyclic compound. Which form is more stable? 3. (4 pts) Sucrose is the only carbohydrate for which it is necessary to make a fresh solution (all of the other carbohydrates will already be prepared in...
F. Hydrolysis of disaccharides and polysaccharides Test tube #1 Test tube #2 Test tube #3 Test...
F. Hydrolysis of disaccharides and polysaccharides Test tube #1 Test tube #2 Test tube #3 Test tube #4 Test tube contents 2 to starch 2% starch 2% sucrose 2% sucrose Iodine test observations Polysaccharide present? (yes/no) no yes yes no Benedict's test observations Cloudy cloudy I brownish peach I greenw/ in COLOR precipitate butter precipitate COLOK w Red at no color Change Yellowish ves Hydrolyzed? (yes/no) no What observation indicated the presence of a polysaccharide? The color of the iodine...
Experiment 33 PART B. SOME REACTIONS OF CARBOHYDRATES Spor Test Results with Carbohydrates Sucrose Carbohyd- Starch...
Experiment 33 PART B. SOME REACTIONS OF CARBOHYDRATES Spor Test Results with Carbohydrates Sucrose Carbohyd- Starch Fructose Glucose rate class Benedict's test Fehling's test Tollens test Glucose oxidase test Iodine test What class of carbohydrate can be expected to give a positive test with the spot tests below? Benedict's glucose oxidase Fehling's iodine Tollens Hydrolysis of polysaccharides Test Results Results of Result from Benedict's test strips Solution Result from iodine test Initial starch Initial sucrose Initial cellulose Final starch Final...
Some reactions of carbohydrates Indicate a (+) or (-) for each test. Example, if starch is...
Some reactions of carbohydrates Indicate a (+) or (-) for each test. Example, if starch is positive for the lodine test, place a (+) in the polysaccharide column. poly mono Carbohydrate dissacharide ketone aldehyde saccharide saccharide starch fructose sucrose glucose lactose are yollow Based on your observations in the table above, answer the following questions. 1. Which of the carbohydrates were polysaccharides? 2. Which of the carbohydrates were monosaccharides? 3. Which of the carbohydrates were disaccharides? 4. Which of the...
Carbohydrates, more commonly known as sugars, are made up of carbon, oxygen, and hydrogen atoms. The...
Carbohydrates, more commonly known as sugars, are made up of carbon, oxygen, and hydrogen atoms. The smallest unit of a carbohydrate is a monosaccharide. Two monosaccharides make up a disaccharide, and many monosaccharides make up a polysaccharide. Disaccharides and polysaccharides can be hydrolyzed back into the individual monosaccharide units. Part A Select the statement that is incorrect. Select the statement that is incorrect. Complex sugars are carbohydrates. All carbohydrates have the general formula Cn(H2O)n. Simple sugars are carbohydrates. Carbohydrates contain...
1-10 help!!! 1) A carbohydrate that gives two molecules when it is completely hydrolyzed is known...
1-10 help!!!
1) A carbohydrate that gives two molecules when it is completely hydrolyzed is known as a A) monosaccharide. B) disaccharide. C) polysaccharide. D) starch. 2) A reducing sugar gives a precipitate of silver metal with Benedict's reagent. a. True b. False 3) Cellulose will give a positive Benedict's test. Sa TrueS b. False 4) The product of oxidation of an aldose is a carboxylic acid. Sa True b. False 5) Maltose is a reducing sugar. a. True b....
please help me answer the following questions 33 DE CARBOHYDRATES THE Starch Carbohyd- rate class monosacchetides P...
please help me answer the following questions
33 DE CARBOHYDRATES THE Starch Carbohyd- rate class monosacchetides Precipitate PART B. SOME REACTIONS OF CARBOHYDRATES Spor Test Results with Carbohydrates Glucose Fructose Sucrose Benedict's Grick red Brick red negative negative test blues (blue) Fehling's Positive Positive Negativ test burnt orange brown l Tollens negative regate negative test clearish cleau clear Glucose oxidase test Iodine dark test blue negative | reaction mono saccharid sitive What class of carbohydrate can be expected to give...
Question 5 2 pts Which of the following types of carbohydrates can be hydrolyzed to give...
Question 5 2 pts Which of the following types of carbohydrates can be hydrolyzed to give smaller units of saccharides? 1. Monosaccharides II. Disaccharides III. Oligosaccharides IV. Polysaccharides I only II and IV only I and II only II, III and IV
#13 c. The 'no acid' test tube (on the right): Slightly opaque 2. Which test tube...
#13
c. The 'no acid' test tube (on the right): Slightly opaque 2. Which test tube gave a positive Benedict's test? #24 #3 test tube light green 13. The purpose of the acid and water bath was to hydrolyze the glycosidic bonds in the disaccharide. Give an equation for the acid-catalyzed hydrolysis of sucrose. Draw the Haworth Formulas and give the name of the monosaccharides produced from hydrolysis. CH OH 0 H H OH H НО H H OH o...
Question : Making use of the tests for carbohydrates outlined in experiment number (5 and 6),...
Question : Making use of the tests for carbohydrates outlined in experiment number (5 and 6), design your own scheme for the identification of different classes of carbohydrates (eg: Mono, di, polysaccharides). Starch, Sucrose, Galactose, Glucose, Fructose, Pentose, Lactose, Maltose Test Reagents Positive results Indication Distilled water Formation of precipitate or cloudiness. Differentiate between mono/disaccharides & polysaccharides Solubility Appearance of reddish-brown colour Differentiate between starch and glycogen (branching effect) Differentiate between reducing& non-reducing sugars. Differentiate between reducing& non-reducing sugars. General...
Pre-Lab Questions (PLQ) for Exp. 9 Carbohydrates (sugars) Use the information in Exp. 9 to answer the following questions 1. (2 pts) What is produced when polysaccharides and disaccharides are hydrolyzed? 2. (2 pts) A monosaccharides can exist as an open chain or as a cyclic compound. Which form is more stable? 3. (4 pts) Sucrose is the only carbohydrate for which it is necessary to make a fresh solution (all of the other carbohydrates will already be prepared in...
F. Hydrolysis of disaccharides and polysaccharides Test tube #1 Test tube #2 Test tube #3 Test tube #4 Test tube contents 2 to starch 2% starch 2% sucrose 2% sucrose Iodine test observations Polysaccharide present? (yes/no) no yes yes no Benedict's test observations Cloudy cloudy I brownish peach I greenw/ in COLOR precipitate butter precipitate COLOK w Red at no color Change Yellowish ves Hydrolyzed? (yes/no) no What observation indicated the presence of a polysaccharide? The color of the iodine...
Experiment 33 PART B. SOME REACTIONS OF CARBOHYDRATES Spor Test Results with Carbohydrates Sucrose Carbohyd- Starch Fructose Glucose rate class Benedict's test Fehling's test Tollens test Glucose oxidase test Iodine test What class of carbohydrate can be expected to give a positive test with the spot tests below? Benedict's glucose oxidase Fehling's iodine Tollens Hydrolysis of polysaccharides Test Results Results of Result from Benedict's test strips Solution Result from iodine test Initial starch Initial sucrose Initial cellulose Final starch Final...
Some reactions of carbohydrates Indicate a (+) or (-) for each test. Example, if starch is positive for the lodine test, place a (+) in the polysaccharide column. poly mono Carbohydrate dissacharide ketone aldehyde saccharide saccharide starch fructose sucrose glucose lactose are yollow Based on your observations in the table above, answer the following questions. 1. Which of the carbohydrates were polysaccharides? 2. Which of the carbohydrates were monosaccharides? 3. Which of the carbohydrates were disaccharides? 4. Which of the...
1-10 help!!!
1) A carbohydrate that gives two molecules when it is completely hydrolyzed is known as a A) monosaccharide. B) disaccharide. C) polysaccharide. D) starch. 2) A reducing sugar gives a precipitate of silver metal with Benedict's reagent. a. True b. False 3) Cellulose will give a positive Benedict's test. Sa TrueS b. False 4) The product of oxidation of an aldose is a carboxylic acid. Sa True b. False 5) Maltose is a reducing sugar. a. True b....
please help me answer the following questions
33 DE CARBOHYDRATES THE Starch Carbohyd- rate class monosacchetides Precipitate PART B. SOME REACTIONS OF CARBOHYDRATES Spor Test Results with Carbohydrates Glucose Fructose Sucrose Benedict's Grick red Brick red negative negative test blues (blue) Fehling's Positive Positive Negativ test burnt orange brown l Tollens negative regate negative test clearish cleau clear Glucose oxidase test Iodine dark test blue negative | reaction mono saccharid sitive What class of carbohydrate can be expected to give...
Question 5 2 pts Which of the following types of carbohydrates can be hydrolyzed to give smaller units of saccharides? 1. Monosaccharides II. Disaccharides III. Oligosaccharides IV. Polysaccharides I only II and IV only I and II only II, III and IV
#13
c. The 'no acid' test tube (on the right): Slightly opaque 2. Which test tube gave a positive Benedict's test? #24 #3 test tube light green 13. The purpose of the acid and water bath was to hydrolyze the glycosidic bonds in the disaccharide. Give an equation for the acid-catalyzed hydrolysis of sucrose. Draw the Haworth Formulas and give the name of the monosaccharides produced from hydrolysis. CH OH 0 H H OH H НО H H OH o...
Question : Making use of the tests for carbohydrates outlined in experiment number (5 and 6), design your own scheme for the identification of different classes of carbohydrates (eg: Mono, di, polysaccharides). Starch, Sucrose, Galactose, Glucose, Fructose, Pentose, Lactose, Maltose Test Reagents Positive results Indication Distilled water Formation of precipitate or cloudiness. Differentiate between mono/disaccharides & polysaccharides Solubility Appearance of reddish-brown colour Differentiate between starch and glycogen (branching effect) Differentiate between reducing& non-reducing sugars. Differentiate between reducing& non-reducing sugars. General...
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