Concept explainers
(a)
Interpretation:
The polysaccharide A and B need to be identified as amylopectin or glycogen. The polysaccharide containing
Concept Introduction:
Polysaccharides contain three or more monosaccharides joined.
Amylopectin is one of the common forms of the starch and it is the branch form of the starch. Starch is the main carbohydrate found in the seeds and roots of plants. Corn, rice, wheat, and potatoes are common foods that contain a great deal of starch. Starch is a
Glycogen is the major form in which polysaccharides are stored in animals. Glycogen, a polymer of glucose-containing a-glycosidic bonds, has a branched structure like amylopectin, but the branching is much more extensive.
(b)
Interpretation:
The polysaccharide stored in the liver needs to be determined.
Concept Introduction:
Polysaccharides contain three or more monosaccharides joined.
Amylopectin is one of the common forms of the starch and it is the branch form of the starch. Starch is the main carbohydrate found in the seeds and roots of plants. Corn, rice, wheat, and potatoes are common foods that contain a great deal of starch. Starch is a polymer composed of repeating glucose units joined in a-glycosidic linkages.
Glycogen is the major form in which polysaccharides are stored in animals. Glycogen, a polymer of glucose-containing a-glycosidic bonds, has a branched structure like amylopectin, but the branching is much more extensive.
(c)
Interpretation:
The polysaccharide present in bread and pasta needs to be determined.
Concept Introduction:
Polysaccharides contain three or more monosaccharides joined.
Amylopectin is one of the common forms of the starch and it is the branch form of the starch. Starch is the main carbohydrate found in the seeds and roots of plants. Corn, rice, wheat, and potatoes are common foods that contain a great deal of starch. Starch is a polymer composed of repeating glucose units joined in a-glycosidic linkages.
Glycogen is the major form in which polysaccharides are stored in animals. Glycogen, a polymer of glucose-containing a-glycosidic bonds, has a branched structure like amylopectin, but the branching is much more extensive.
(c)
Interpretation:
The polysaccharide containing galactose units needs to be determined.
Concept Introduction:
Polysaccharides contain three or more monosaccharides joined.
Amylopectin is one of the common forms of the starch and it is the branch form of the starch. Starch is the main carbohydrate found in the seeds and roots of plants. Corn, rice, wheat, and potatoes are common foods that contain a great deal of starch. Starch is a polymer composed of repeating glucose units joined in a-glycosidic linkages.
Glycogen is the major form in which polysaccharides are stored in animals. Glycogen, a polymer of glucose-containing a-glycosidic bonds, has a branched structure like amylopectin, but the branching is much more extensive.
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Chapter 20 Solutions
GENERAL,ORGANIC, & BIOLOGICAL CHEM-ACCES
- 3. 2. 1. On the graph below, plot the volume of rain in milliliters versus its height in centimeters for the 400 mL beaker. Draw a straight line through the points and label it "400 mL beaker." Volume (mL) 400 350 300 250 200 150 750 mL Florence Volume Versus Height of Water 400 mL beaker 100 50 0 0 2 3 4 5 Height (cm) 6 7 8 9 10 Explain why the data points for the beaker lie roughly on a straight line. What kind of relationship is this? How do you know? (see page 276 text) the design of the beaker is a uniform cylinder the volume of liquid increases evenly with its height resulting in a linear relationship. What volume would you predict for 10.0 cm of water? Explain how you arrived at your answer. Use the data table and the graph to assist you in answering the question. 4. Plot the volume of rain in milliliters versus its height in centimeters for the 250 mL Florence flask on the same graph. Draw a best-fit curve through the points and label it "250 mL Florence flask." oke camearrow_forwardShow work. Don't give Ai generated solutionarrow_forwardIn the video, we looked at the absorbance of a certain substance and how it varies depending on what wavelength of light we are looking at. Below is a similar scan of a different substance. What color BEST describes how this substance will appear? Absorbance (AU) Violet Blue Green Orange 1.2 1.0- 0.8- 0.6- 0.4- 0.2 0.0 450 500 550 600 650 700 Wavelength (nm) violet indigo blue green yellow orange red Red O Cannot tell from this information In the above graph, what causes -450 nm wavelength of light to have a higher absorbance than light with a -550 nm wavelength? Check all that are true. The distance the light travels is different The different data points are for different substances The concentration is different at different times in the experiment Epsilon (molar absortivity) is different at different wavelengthsarrow_forward
- 5. a. Data were collected for Trial 1 to determine the molar mass of a nonvolatile solid solute when dissolved in cyclo- hexane. Complete the table for the analysis (See Report Sheet). Record calculated values with the correct number of significant figures. B. Freezing Point of Cyclohexane plus Calculation Zone Unknown Solute 2. Mass of cyclohexane (g) 10.14 Part C.4 3. Mass of added solute (g) 0.255 C. Calculations 1. k; for cyclohexane (°C⚫ kg/mol) 20.0 2. Freezing point change, AT, (°C) 3.04 Part C.6 3. Mass of cyclohexane in solution (kg) 4. Moles of solute, total (mol) Show calculation. 5. Mass of solute in solution, total (g) 6. Molar mass of solute (g/mol) Show calculation.arrow_forwardDraw and name the R groups of all 20 amino acids.arrow_forward3. Two solutions are prepared using the same solute: Solution A: 0.14 g of the solute dissolves in 15.4 g of t-butanol Solution B: 0.17 g of the solute dissolves in 12.7 g of cyclohexane Which solution has the greatest freezing point change? Show calculations and explain.arrow_forward
- 2. Give the ground state electron configuration (e.g., 02s² σ*2s² П 2p²) for these molecules and deduce its bond order. Ground State Configuration Bond Order H2+ 02- N2arrow_forward1. This experiment is more about understanding the colligative properties of a solution rather than the determination of the molar mass of a solid. a. Define colligative properties. b. Which of the following solutes has the greatest effect on the colligative properties for a given mass of pure water? Explain. (i) 0.01 mol of CaCl2 (ii) 0.01 mol of KNO3 (iii) 0.01 mol of CO(NH2)2 (an electrolyte) (an electrolyte) (a nonelectrolyte)arrow_forward5. b. For Trials 2 and 3, the molar mass of the solute was 151 g/mol and 143 g/mol respectively. a. What is the average molar mass of the solute ? b. What are the standard deviation and the relative standard deviation (%RSD) for the molar mass of the solute ?arrow_forward
- Show work. Don't give Ai generated solutionarrow_forward2. Explain why ice cubes formed from water of a glacier freeze at a higher temperature than ice cubes formed from water of an under- ground aquifer. Photodynamic/iStockphotoarrow_forwardShow reaction mechanism. don't give Ai generated solutionarrow_forward
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