Carbohydrates Overview and Classification
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Questions and Answers

What are carbohydrates comprised of?

  • Carbon, hydrogen, and nitrogen
  • Carbon, hydrogen, and phosphorus
  • Carbon, hydrogen, and oxygen (correct)
  • Oxygen, hydrogen, and sulfur
  • What are the components of simple sugars?

    Monosaccharides and Disaccharides

    What are simple sugars?

    Sugars that contain only one or two saccharide molecules

    What are monosaccharides?

    <p>Single molecules of sugar</p> Signup and view all the answers

    What are disaccharides?

    <p>Composed of two monosaccharides</p> Signup and view all the answers

    What is glucose?

    <p>The simple sugar that circulates in the blood</p> Signup and view all the answers

    What is fructose commonly known as?

    <p>Fruit sugar</p> Signup and view all the answers

    What is galactose?

    <p>A sugar that combines with glucose to form lactose</p> Signup and view all the answers

    What is maltose composed of?

    <p>Two joined glucose molecules</p> Signup and view all the answers

    What is lactose?

    <p>Milk sugar composed of glucose and galactose</p> Signup and view all the answers

    What are complex carbohydrates also known as?

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

    What do polysaccharides taste like?

    <p>They do not taste sweet</p> Signup and view all the answers

    What are the components of complex sugars?

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

    What is starch?

    <p>The storage form of glucose in plants</p> Signup and view all the answers

    What is glycogen?

    <p>The storage form of glucose in animals and humans</p> Signup and view all the answers

    What is fiber generally considered to be?

    <p>A group of polysaccharides that cannot be digested</p> Signup and view all the answers

    What is insoluble fiber?

    <p>Non-digestible carbohydrates that do not dissolve in water</p> Signup and view all the answers

    What is soluble fiber?

    <p>Non-digestible carbohydrates that dissolve in water</p> Signup and view all the answers

    What are the main sources of carbohydrates?

    <p>Grains, Vegetables, Fruits, and Dairy</p> Signup and view all the answers

    What is dietary fiber?

    <p>Carbohydrates and lignin that cannot be digested</p> Signup and view all the answers

    What is functional fiber?

    <p>Extracted or isolated nondigestible carbohydrates with beneficial effects</p> Signup and view all the answers

    Study Notes

    Carbohydrates Overview

    • Composed of carbon, hydrogen, and oxygen, classified as simple sugars or complex carbohydrates (CHO).
    • Serve as energy-yielding nutrients, fundamental to various bodily functions.

    Simple Sugars

    • Simple sugars include monosaccharides and disaccharides.
    • Monosaccharides: One sugar molecule (e.g., glucose, fructose, galactose).
    • Disaccharides: Two sugar molecules (e.g., sucrose, maltose, lactose).

    Monosaccharides

    • Absorbed directly without digestion.
    • Hexoses are common; contain six carbon atoms.
    • Major types include:
      • Glucose: Circulates in blood, provides energy, key component of all disaccharides, transformed from other digestible carbohydrates.
      • Fructose: Known as "fruit sugar," the sweetest natural sugar, found in high-fructose corn syrup.
      • Galactose: Combines with glucose to form lactose, minimal occurrence in foods.

    Disaccharides

    • Must be broken down into monosaccharides for absorption.
    • Types include:
      • Sucrose: Common table sugar.
      • Maltose: Composed of two glucose molecules, not naturally occurring in foods.
      • Lactose: Milk sugar made from glucose and galactose, least sweet sugar present in milk.

    Complex Carbohydrates (Polysaccharides)

    • Long chains of glucose, consist of hundreds to thousands of glucose molecules.
    • Types include:
      • Starch: Storage form of glucose in plants; major food source including grains, potatoes, and legumes.
      • Glycogen: Animal storage form of glucose; maintained in liver for blood sugar regulation.
      • Fiber: Indigestible polysaccharides that help regulate digestion.

    Fiber

    • Generally classified into soluble and insoluble fiber.
    • Insoluble Fiber: Non-digestible, does not dissolve in water, promotes stool bulk.
    • Soluble Fiber: Dissolves into a viscous substance, aids in glucose regulation, cholesterol lowering, and satiety.

    Sources of Carbohydrates

    • Primary sources include grains, vegetables, fruits, and dairy.
    • Grains are synonymous with carbohydrates; include whole or refined classifications.
    • Nuts, dried peas, and beans also contribute to carbohydrate intake.

    Dietary vs. Functional Fiber

    • Dietary Fiber: Natural components of plants, non-digestible by human enzymes.
    • Functional Fiber: Isolated fibers with beneficial health effects, proposed by the Food and Nutrition Board.

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    Description

    This quiz covers the basics of carbohydrates, including the composition, types, and functions of simple sugars and complex carbohydrates. It focuses on monosaccharides and disaccharides, detailing their characteristics and roles in the diet. Test your knowledge of these essential nutritional compounds!

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