Which of the following are L sugars and which are D sugars?
Question:
Which of the following are L sugars and which are D sugars?
![]() |
Sugars:
The sugars represent the carbohydrates which consist of a chain of chiral carbons. The hydroxyl group of the last carbon is analyzed to classify the sugar into subtype D or L sugar. The count of carbons is also helpful in the classification of sugars.
Answer and Explanation: 1
Become a Study.com member to unlock this answer! Create your account
View this answerThe D and L sugars are decided by observing the hydroxyl group of the last chiral center. The hydroxyl group on the right side denotes D sugar, while...
See full answer below.
Ask a question
Our experts can answer your tough homework and study questions.
Ask a question Ask a questionSearch Answers
Learn more about this topic:

from
Chapter 2 / Lesson 13Understand simple sugars, or monosaccharides. Learn about the simple sugar's molecular formula, structure, and its chemical composition through various examples.
Related to this Question
- Which sugars are ketoses? A.Glucose B.Fructose C.Sucrose D.Lactose E.Starch F.Water
- Which of the following sugar is an L-sugar?
- Identify the following aldose, and tell whether the following is a D or L sugar.
- Which of the following is not a monosaccharide? (a) Fructose (b) Ribose (c) Glucose (d) Pectins.
- Which of the following is sweetest? (a) Sucrose (b) Fructose (c) Glucose (d) Lactose.
- Which of the following is sweetest? (a) Sucrose (b) Glucose (c) Fructose (d) Lactose
- Identify the following aldose below, and tell whether the given is a D or L sugar.
- Which of the following is not a monosaccharide? (a) Fructose (b) Ribose (c) Pectins (d) Glucose.
- Which of these carbohydrates are not reducing sugars? A. amylase B. glucose C. galactose D. fructose E. sucrose F. neither A nor E
- Which of the following is a monosaccharide? A. sucrose B. fructose C. cellulose D. glycogen E. both C and D
- Which of the following is not a monosaccharide? A) Fructose B) Glucose C) Galactose D) Sucrose
- Which is not a reducing sugar? A) Glucose. B) Fructose. C) Sucrose. D) Galactose. E) An aldopentose.
- Which of the following carbohydrates is a pentose? a) Fructose b) Lactose c) Ribose d) Sucrose
- Which of the following carbohydrates is a pentose? Fructose (b) Lactose (c) Ribose (d) Sucrose
- Which of these is not a common monosaccharide? a. glucose b. fructose c. sucrose
- Which of the following is a polymer? a. fructose b. adenine nucleotide c. glycogen d. glucose
- What sugar is the C-3 epimer of D-sorbose?
- Which of the following substances will produce both glucose and fructose upon hydrolysis? a. lactose b. maltose c. sucrose d. glycogen
- Classify the following sugar. (For example, glucose is an aldohexose).
- Which of the following is not a monosaccharide? A) Fructose B) Glucose C) Glyceraldehyde D) Galactose E) Sucrose
- Classify the below sugar. (For example, glucose is an aldohexose).
- Which of the following carbohydrates is also known as milk sugar? a. Lactose b. Maltose c. Cellobiose d. Sucrose e. Trehalose
- Which of the following is an example of an aldohexose? a. Sucrose b. Glucose c. Fructose d. Xylose e. Ribose
- Classify the given sugars. (For example, glucose is an aldohexose).
- Which two sugars are epimers of D-glucose? Select two answers. A. D-idose B. D-altrose C. D-gulose D. D-talose E. D-mannose F. D-allose
- Which of these is not a common monosaccharide? I. Glucose II. Fructose III. Lactose A. III only B. II only C. II and III D. I and II E. I and III
- Which of the following contains alpha-1,6-branches? a. Amylose b. Glycogen c. Cellulose d. Sucrose
- Which of the following substances will produce both glucose and galactose when hydrolyzed? a. lactose b. maltose c. sucrose d. glycogen
- Which of the following monosaccharides is a ketohexose? a. glucose b. fructose c. ribulose d. ribose
- Which of the following is a polysaccharide? a) Sucrose b) Hexose c) Glucose d) Celluose e) Two of the above
- What class of carbohydrates gives two sugar molecules when hydrolyzed?
- Which of the following are produced by the hydrolysis of maltose? a. One molecule each of D-galactose and L-glucose b. Two molecules of L-fructose c. One molecule each of D-glucose and D-fructose d. Two molecules of D-glucose e. One molecule each of L-gal
- What sugar is produced by hydrolysis of both sucrose and lactose ?
- What are reducing sugars? In your answer, provide five examples of where you would find reducing sugars in everyday foods.
- Which of the following are reducing sugars and would give a positive Benedict's test? (Select all that apply.) a. galactose b. maltose c. fructose d. sucrose e. amylose
- Which of the following is not converted to blood sugar by the human body? a. lactose b. dextrose c. cellulose d. glycogen
- Which of the following is not a biological polymer? a. triglycerides b. cornstarch c. glucose d. DNA
- Which of the following statements is true? A) All monosaccharides in either the ketose or aldose family are reducing sugars. B) Only aldoses, but not ketoses, are reducing sugars. C) Only ketoses, but not aldoses, are reducing sugars. D) All disaccharides
- Classify the sugar below. (For example, glucose is an aldohexose).
- Classify the given sugar. (For example, glucose is an aldohexose).
- Which of the following is the most abundant of all carbohydrates? a. Cellulose b. Glycogen c. Lactose d. Starch e. Ribose
- Glucose and fructose, two simple sugars, are carbohydrates. Which statement about these simple sugars is not correct? A. The structure for both sugars can be cyclic. B. Fructose has one less carbon atom than glucose. C. Glucose can be represented by th
- Which of the following are produced by the hydrolysis of maltose? a. one molecule each of D-galactose and L-glucose b. one molecule each of D-glucose and D-fructose c. one molecule each of L-galactose and D-fructose d. two molecules of L-fructose e. two m
- What % of the sunlight reaching earth is actually used by plants to make sugars?
- Which two sugars are related as C-3 epimers? Select two answers. A. D-gulose B. D-allose C. D-idose D. D-mannose E. D-altrose
- What sugar is used in the backbone of DNA molecules?
- Which sugar residue is present in the sugar-phosphate backbone of RNA? a. 3-deoxyribose b. 2-deoxyribose c. ribose d. sucrose
- Classify each of the following sugars. (For example, glucose is an aldohexose.) [{Image src='sug1786576179461705168.jpg' alt='sugar' caption=''}]
- Which of the following is an example of a monosaccharide? 1. Maltose 2. Lactose 3. Galactose 4. Amylose 5. None of the above
- Which of the following monosaccharides is a ketohexose? a. Fructose b. Glucose c. Xylose d. Galactose e. Ribose
- What is the complete name of the following sugar?
- Which of these carbohydrates listed below is not typically considered usable for humans? A. sucrose B. glucose C. glycogen D. cellulose E. starch
- Name the following monosaccharide.
- Classify the sugar called maltose.
- Each of the following statements about glucose is correct except one. Which statement is incorrect? (a) Glucose is a reducing sugar. (b) Glucose has six carbon atoms. (c) Glucose undergoes mutarotation. (d) Glucose is a disaccharide. (e) Glucose is an ald
- Which of the following is a polysaccharide? a) cellulose. b) starch. c) ribose. d) galactose. e) cellulose and starch.
- Which compounds are L-monosaccharides?
- Which compounds are D-monosaccharides?
- How many aldoheptoses are there? How many are D sugars, and how many are L sugars?
- What monosaccharide is found in cellulose, starch, and glycogen? A) Glucose. B) Galactose. C) N-acetyl-D-glucosamine. D) Fructose. E) More than one of the monosaccharides above is found in cellulose, starch, and glycogen.
- Which of the following is one of the common names used for sucrose? a. Milk sugar b. Beet sugar c. Malt sugar d. Brain sugar e. Blood sugar
- Identify the given aldose and indicate whether it is a D or L sugar.
- Which of the following carbohydrates have beta glycosidic bonds? a. glucose b. amylopectin c. lactose d. galactose e. amylose f. maltose g. cellulose h. fructose i. ribose
- Which of the following serves as dietary fiber? a. galactose b. fructose c. starch d. cellulose
- In which of the following sugars is the bonding between monosaccharide units "head-to-head" rather than "head-to-tail"? a. cellobiose b. maltose c. lactose d. sucrose
- Each of the following statements about fructose is correct except one. Which statement is incorrect? a. Fructose is a stereoisomer of glucose. b. Fructose has six carbon atoms. c. Fructose is a monosaccharide. d. Fructose is a ketose.
- When a molecule of sucrose is hydrolyzed, what are the products?
- What structural features do all reducing sugars have in common?
- Which best describes the sugar shown below? a D-aldopentose an L-ketohexose a D-ketopentose a D-aldohexose
- Classify the given sugar by type (for example, glucose is an aldohexose).
- Which is not a biological polymer? a. cornstarch b. triglycerides c. glucose d. DNA
- Which is not a biological polymer? a. triglycerides b. cornstarch c. glucose d. DNA
- Which contains more carbon, 6.01 g of glucose, C_6H_{12}O_6, or 5.85 g of ethanol, C_2H_6O?
- Which group of carbohydrates undergo a hydrolysis reaction? a. monosaccharides b. disaccharides c. trisaccharides d. tetrasaccharides e. polysaccharides
- Classify the following monosaccharides:
- The following model is that of an aldopentose. Identify it as a D sugar or an L sugar.
- Which of the following monosaccharides is an epimer of glucose at C-4? a) Galactose b) Mannose c) Gulose d) talose e) altrose.
- What is the full name of the sugar alcohol produced when D-ribose is reduced?
- What is the Selivanoffs test result for the following: A. Glucose B. Fructose C. Sucrose D. Lactose E. Starch F. Water.
- Classify each of the following carbohydrates as a monosaccharide, disaccharide, or polysaccharide. - starch; - galactose; - sucrose; - lactose; - glucose; - fructose; - glycogen.
- What are the three types of atoms that compose sugars and lipids?
- Of the choices listed below, which would be classified as a polysaccharide? A. sucrose B. glucose C. cellulose D. glycogen E. both C and D
- Which of the following is the least acidic? a. Glucose (pK_a = 12.3). b. Ammonia (pK_a = 9.26). c. Pyrimidine (pK_a = 1.3). d. Pyrrole (pK_a = 0.40).
- What are the structures of the following: *trioses *tetroses *pentoses *hexoses *sucrose *maltose *lactose *starch *glycogen *cellulose
- Which one of these sugars gives a bluish-black color in the iodine test? a. glucose b. fructose c. sucrose d. lactose e. starch
- Of the choices listed below, which would be classified as a polysaccharide? A. glucose B. sucrose C. cellulose D. glycogen E. both C and D
- Sucrose (C12H22O11), which is commonly known as table sugar, reacts in dilute acid solutions to form two simpler sugars: glucose and fructose, both of which have the formula C6H12O6. At 23 degrees C and in 0.5M HCl , the following data were obtained for t
- What is the formula for glucose?
- Determine whether the following statement is true or false: Glucose is a monosaccharide.
- Which are anomers? a. aldotetrose and ketotetrose b. D-glucose and L-glucose c. glucopyranose and glucofuranose d. a-D-galacose and b-D-galactose
- What is the chemical formula of sunlight and glucose?
- When we break down sucrose in our bodies through the process of digestion, what are the resulting products? A. glucose and fructose B. galactose and fructose C. fructose and lactose D. glucose and galactose E. none of the above
- A 250 mL bottle of iced tea contains 18 g of sugar. What is the w/v% of sugar in the iced tea?
- Name three ways in which sugars can be used other than those going directly into glycolysis.
- To which classes of sugars do the following monosaccharides belong? Identify which are D and L. Drag the labels below to format the name like \"L-aldohexose\".
- Rank the sweetness of 0.0375% sucralose, 7.5% glucose, 7.5% xylitol, 7.5% fructose, 10% sucrose, and 7.5% sucrose, comment on the differences in sweetness, and explain the difference.
- Which of the following statements is false? A. Carbohydrates are hydrophilic molecules. B. Living things use carbohydrates for structure and for energy storage. C. Carbohydrates are composed principally of carbon hydrogen and oxygen. D. Carbohydrates a
- Which of the following would be released from a triglyceride upon hydrolysis? A. 3 Fatty acids (or 3 moles of fatty acid per mole of triglyceride) B. Glucose C. Glyceraldehyde-3-phosphate D. Pyruvate
- Which statement about carbohydrates is not correct? A. Carbohydrates contain either aldehyde or ketone functional groups or contain groups that can readily transform to aldehyde or ketone groups. B. An aldehyde group is a functional group that contains
- What are the subunits and functions of carbohydrates?