Biochemistry 1 Lecture 3: Oligosaccharides & Polysaccharides
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Questions and Answers

What is the result of the oxidation of the aldehyde group of glucose by a weak oxidizing agent?

  • Gluconic acid (correct)
  • Galactonic acid
  • Glucose
  • Galactose

    • Which compound is formed when concentrated nitric acid oxidizes both the aldehyde and the primary alcoholic groups of galactose?

  • Glucaric acid
  • Galactaric acid (correct)
  • Galactose
  • Glucose

    • What is the product of the oxidation of glucose's primary alcoholic group by a moderate oxidizing agent?

  • Glucouronic acid (correct)
  • Gluconic acid
  • Glucose
  • Glucaric acid

    • Which compound is formed when concentrated nitric acid oxidizes both the aldehyde and the primary alcoholic groups of glucose?

    <p>Glucaric acid</p> Signup and view all the answers

    What is the result of the reduction of mannose using a reducing reagent?

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

    What is the product formed by the oxidation of galactose's primary alcoholic group by a moderate oxidizing agent?

    <p>Galacturonic acid</p> Signup and view all the answers

    Which type of sugar yields 2 to 10 molecules of the same or different monosaccharides on hydrolysis?

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

    What is the designation for an oligosaccharide that yields 3 molecules of monosaccharide on hydrolysis?

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

    Which of the following is classified as a disaccharide?

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

    What is the composition of sucrose?

    <p>α-D glucose and β-D fructose units</p> Signup and view all the answers

    Which polysaccharide is the main reserve of carbohydrates in animals and yeast?

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

    Where is starch mainly found in plants?

    <p>In the roots and stems</p> Signup and view all the answers

    Which type of polysaccharides do not taste sweet?

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

    How can polysaccharides be broken down into smaller molecules?

    <p>Through hydrolysis by adding diluted acid or through enzymatic action</p> Signup and view all the answers

    What distinguishes homopolysaccharides from heteropolysaccharides?

    <p>They have the same type of monosaccharide repeating units</p> Signup and view all the answers

    What is the general formula of carbohydrates?

    <p>Cn(H2O)n</p> Signup and view all the answers

    Which of the following is a biological function of carbohydrates?

    <p>Serving as a storage form of energy in the body</p> Signup and view all the answers

    What is the most common example of a carbohydrate?

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

    Which functional groups are present in carbohydrates?

    <p>-OH and C=O</p> Signup and view all the answers

    What is the role of carbohydrates in RNA and DNA structure?

    <p>Synthesizing ribose sugars</p> Signup and view all the answers

    Which compound serves as a structural component of cell membranes?

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

    What is responsible for the formation of steroidal hormones such as Cortisol and Sex hormones?

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

    Which of the following is a protein-based chemical that acts as a messenger transmitting signals from one cell to another?

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

    What is the main function of enzymatic proteins in the body?

    <p>Metabolic acceleration</p> Signup and view all the answers

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