Homework Answers
Answer is 'glucose'
Amylase is an enzyme capable of hydrolysing starch in to
glucose.Since iodin is an indicator of starch, when starch got
converted to glucose the reaction between starch and the solution
is lost thus the colouration disappears soon.
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When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
5. Iodine reacts with starch to form a blue-colored complex. Explain the results of the iodine...
5. Iodine reacts with starch to form a blue-colored complex. Explain the results of the iodine test with the hydrolyzed starch solution. 6. Sucrose differs from honey in that honey is a mixture of glucose and fructose. Sucrose is a dis- accharide made up of them. Explain why honey is a quicker source of energy than sucrose.
4. Starch forms a dark blue complex when treated with iodine. Partially hydrolyzed forms (still a...
4. Starch forms a dark blue complex when treated with iodine. Partially hydrolyzed forms (still a polymer) of starch (erythrodextrin and glycogen) give a red complex. These colored complexes become colorless when heated but the color comes back again upon cooling. A single drop of Iz in KI solution is enough to give an unmistakable test on a solution or a solid. Explain how the image below relates to this experiment Amylosehelice with the glucose-monomerunit: -OH O 0. но-
Question 39 2 pts To test for the presence of starch, iodine can be used. A...
Question 39 2 pts To test for the presence of starch, iodine can be used. A positive reaction results in a black color. A dialysis bag filled with starch solution and secured on both ends is placed in iodine solution. After 30 minutes the dialysis bag appears black. Based on this information, what most accurately describes what happened? Due to its size and polarity, starch was able to exit the dialysis bag and interact with the iodine solution. Due to...
1) Based on the explanation on the interaction between starch, salivary amylase and iodine solution at...
1) Based on the explanation on the interaction between starch, salivary amylase and iodine solution at the beginning of the presentation, please give a brief explanation on the differences in colour over time for each concentration. 2) Why do you think the rate of reaction increases as the concentration of the enzyme is increased? Is the rate of reaction increasing indefinitely as the concentration increases? 3) Why do you think the reaction rate is different as the pH of the...
ne. UP Sugar Jecau repa bout cam We consisting of many glucose Lules linked together. Iodine...
ne. UP Sugar Jecau repa bout cam We consisting of many glucose Lules linked together. Iodine (IKI) is added to detect the presence of starch. The iodine molecules ger stuck in the spirals of the starch molecule and cause a blue-black color to appear. A red color is an indica lack color of the star the indime sad edit rum ace Name: Lab Questions from Week 3. Fill in the following: To test for the following: Reagent/indicator Test name Section...
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...
someone help me with these 7 questions add a drop of iodine solution. If starch is present, I Wl iodine. The starch...
someone help me with these 7 questions
add a drop of iodine solution. If starch is present, I Wl iodine. The starch-iodine complex is deep blue-violet. Repeat this test with a com- mercial aspirin tablet and with the acetylsalicylic acid prepared in this experiment O N S at is the purpose of the concentrated phosphoric acid used in the first step? What would happen if the phosphoric acid were left out? 2. 1. Wh 3. If you used 250 mg...
“-” represents a clear/yellow solution, “+” represents a light blue solution, and “++” represents a dark blue solution. 1. 1% glucose - observation: negative. Starch not present 2. 1% starch - observa...
“-” represents a clear/yellow solution, “+” represents a light
blue solution, and “++” represents a dark blue solution.
1. 1% glucose - observation: negative. Starch not present
2. 1% starch - observation: ++. Starch present
3. 1% starch + amylase #1 (body temperature). Observation:
negative. Starch not present
4. 1% starch + amylase #2 (body temperature). Observation:
negative. Starch not present.
5. 1% starch + amylase #1 (high temp). Observation: +. Starch
present
6. 1% starch + amylase #2 (high...
do # 2 first photo Calculate the ongar UUM Calculate the average concentration of the original...
do # 2
first photo
Calculate the ongar UUM Calculate the average concentration of the original Cu4+ solution Pre-Laboratory Questions 1. Define the term titration. From the chemical equations provided in the introduction, write the overall balanced stoichiometric equation for the volumetric analysis of Cu2+. A 25.00 mL sample of a Cuct solution requires 35.45 mL of 0.2000 M Na S,O2 solution to reach the end point. Calculate the molar concentration of Cuct in the sample. the amount of metallic...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
5. Iodine reacts with starch to form a blue-colored complex. Explain the results of the iodine test with the hydrolyzed starch solution. 6. Sucrose differs from honey in that honey is a mixture of glucose and fructose. Sucrose is a dis- accharide made up of them. Explain why honey is a quicker source of energy than sucrose.
4. Starch forms a dark blue complex when treated with iodine. Partially hydrolyzed forms (still a polymer) of starch (erythrodextrin and glycogen) give a red complex. These colored complexes become colorless when heated but the color comes back again upon cooling. A single drop of Iz in KI solution is enough to give an unmistakable test on a solution or a solid. Explain how the image below relates to this experiment Amylosehelice with the glucose-monomerunit: -OH O 0. но-
Question 39 2 pts To test for the presence of starch, iodine can be used. A positive reaction results in a black color. A dialysis bag filled with starch solution and secured on both ends is placed in iodine solution. After 30 minutes the dialysis bag appears black. Based on this information, what most accurately describes what happened? Due to its size and polarity, starch was able to exit the dialysis bag and interact with the iodine solution. Due to...
ne. UP Sugar Jecau repa bout cam We consisting of many glucose Lules linked together. Iodine (IKI) is added to detect the presence of starch. The iodine molecules ger stuck in the spirals of the starch molecule and cause a blue-black color to appear. A red color is an indica lack color of the star the indime sad edit rum ace Name: Lab Questions from Week 3. Fill in the following: To test for the following: Reagent/indicator Test name Section...
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...
someone help me with these 7 questions
add a drop of iodine solution. If starch is present, I Wl iodine. The starch-iodine complex is deep blue-violet. Repeat this test with a com- mercial aspirin tablet and with the acetylsalicylic acid prepared in this experiment O N S at is the purpose of the concentrated phosphoric acid used in the first step? What would happen if the phosphoric acid were left out? 2. 1. Wh 3. If you used 250 mg...
“-” represents a clear/yellow solution, “+” represents a light
blue solution, and “++” represents a dark blue solution.
1. 1% glucose - observation: negative. Starch not present
2. 1% starch - observation: ++. Starch present
3. 1% starch + amylase #1 (body temperature). Observation:
negative. Starch not present
4. 1% starch + amylase #2 (body temperature). Observation:
negative. Starch not present.
5. 1% starch + amylase #1 (high temp). Observation: +. Starch
present
6. 1% starch + amylase #2 (high...
do # 2
first photo
Calculate the ongar UUM Calculate the average concentration of the original Cu4+ solution Pre-Laboratory Questions 1. Define the term titration. From the chemical equations provided in the introduction, write the overall balanced stoichiometric equation for the volumetric analysis of Cu2+. A 25.00 mL sample of a Cuct solution requires 35.45 mL of 0.2000 M Na S,O2 solution to reach the end point. Calculate the molar concentration of Cuct in the sample. the amount of metallic...
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