Biology Chapter: Carbohydrates
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Questions and Answers

What type of glucose is used to form cellulose?

  • Beta glucose (correct)
  • Delta glucose
  • Gamma glucose
  • Alpha glucose

    • What role do hydrogen bonds play in cellulose structure?

  • They prevent cellulose from dissolving in water.
  • They facilitate the breakdown of cellulose into glucose.
  • They provide stability to the microfibrils. (correct)
  • They determine the chemical reactivity of cellulose.

    • In which type of organism would one primarily find cellulose?

  • Plant cells (correct)
  • Bacteria
  • Animal cells
  • Fungi

    • Which of the following is NOT a characteristic of cellulose?

    <p>It serves as energy storage in animal cells.</p> Signup and view all the answers

    How many chains are linked together to form cellulose microfibrils?

    <p>Hundreds</p> Signup and view all the answers

    Which disaccharide is specifically associated with energy provision for cells?

    <p>Maltose</p> Signup and view all the answers

    What type of reaction is involved in the formation of maltose from two monosaccharides?

    <p>Condensation reaction</p> Signup and view all the answers

    What type of glycosidic bond is present in maltose?

    <p>1-4 glycosidic bond</p> Signup and view all the answers

    Which of the following is used to detect reducing sugars?

    <p>Benedict's solution</p> Signup and view all the answers

    What process breaks down disaccharides into monosaccharides?

    <p>Hydrolysis reaction</p> Signup and view all the answers

    What distinguishes amylopectin from amylose in starch molecules?

    <p>Amylopectin contains occasional branches in its glucose chains.</p> Signup and view all the answers

    What type of bond links glucose molecules in polysaccharides?

    <p>1-4 glycosidic bonds</p> Signup and view all the answers

    In which part of the body is glycogen primarily stored?

    <p>Liver and muscles</p> Signup and view all the answers

    Which test is used to identify the presence of starch?

    <p>Iodine test</p> Signup and view all the answers

    What is a characteristic feature of glycogen compared to starch?

    <p>Glycogen is more readily mobilized during energy demands.</p> Signup and view all the answers

    What is the distinguishing structural feature of α-glucose compared to β-glucose?

    <p>The position of the hydroxyl group at C1</p> Signup and view all the answers

    Which statement about fructose is true?

    <p>Fructose is a hexose sugar.</p> Signup and view all the answers

    How does galactose's solubility compare to fructose?

    <p>Galactose is less soluble than fructose.</p> Signup and view all the answers

    In the structure of β-glucose, how is every other molecule oriented?

    <p>Inverted 180°</p> Signup and view all the answers

    What is the molecular formula for both α-glucose and β-glucose?

    <p>C6H12O6</p> Signup and view all the answers

    What type of bond is formed between two monosaccharides during the creation of a disaccharide?

    <p>Glycosidic bond</p> Signup and view all the answers

    Which disaccharide is formed from glucose and galactose?

    <p>Lactose</p> Signup and view all the answers

    What is released during the condensation reaction that forms a disaccharide?

    <p>Water</p> Signup and view all the answers

    What is the specific linkage called in the disaccharide maltose?

    <p>α-1,4-Glycosidic linkage</p> Signup and view all the answers

    Which of the following disaccharides is commonly found in fruit?

    <p>Sucrose</p> Signup and view all the answers

    What is the primary role of carbohydrates in the body?

    <p>Providing energy</p> Signup and view all the answers

    Which type of carbohydrate is primarily used for energy storage in animals?

    <p>Glycogen</p> Signup and view all the answers

    Which carbohydrate is classified as a disaccharide?

    <p>Sucrose</p> Signup and view all the answers

    What type of carbohydrate is formed when multiple monosaccharides undergo condensation reactions?

    <p>Polysaccharide</p> Signup and view all the answers

    Which statement correctly differentiates between amylose and amylopectin?

    <p>Amylose has 1,4 glycosidic links and forms helices, while amylopectin has 1,6 glycosidic links.</p> Signup and view all the answers

    What elements are carbohydrates primarily composed of?

    <p>Carbon, hydrogen, and oxygen</p> Signup and view all the answers

    Which of the following is a good dietary source of carbohydrates?

    <p>Pasta</p> Signup and view all the answers

    Which of the following statements about starch is NOT true?

    <p>Starch is soluble in water.</p> Signup and view all the answers

    What occurs during hydrolysis in relation to disaccharides?

    <p>Disaccharides are broken down into monosaccharides.</p> Signup and view all the answers

    What type of reaction occurs when complex sugars are broken down into monosaccharides?

    <p>Hydrolysis reaction</p> Signup and view all the answers

    Which of the following statements regarding Benedict's solution is correct?

    <p>The color red signifies a high concentration of reducing sugar.</p> Signup and view all the answers

    Which of the following describes amylose?

    <p>It is a linear polymer.</p> Signup and view all the answers

    What is a key benefit of starch as a carbohydrate store?

    <p>It is readily converted to energy.</p> Signup and view all the answers

    Which of the following polysaccharides is primarily found in animals?

    <p>Glycogen</p> Signup and view all the answers

    Which of the following statements about carbohydrates is true?

    <p>Carbohydrates serve as the primary energy source for living organisms.</p> Signup and view all the answers

    What is the common formula structure for monosaccharides?

    <p>(CH₂O)n</p> Signup and view all the answers

    Which of the following is NOT an example of a monosaccharide?

    <p>Maltose</p> Signup and view all the answers

    Hexose sugars are characterized by which of the following properties?

    <p>They are sweet-tasting and soluble.</p> Signup and view all the answers

    What type of carbohydrate consists of three or more subunits?

    <p>Polysaccharides</p> Signup and view all the answers

    What is the primary function of glycogen in animal cells?

    <p>Energy storage</p> Signup and view all the answers

    Which of the following substances is detected by a blue/black color change when tested with iodine?

    <p>Starch</p> Signup and view all the answers

    What type of glycosidic bonds connects the β-glucose monomers in cellulose?

    <p>1-4 glycosidic bonds</p> Signup and view all the answers

    Which of the following correctly describes the structure of glycogen?

    <p>A branched polymer of α-glucose</p> Signup and view all the answers

    What characteristic of cellulose gives plants their structural strength?

    <p>Hydrogen bonds between microfibrils</p> Signup and view all the answers

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