What are indicators for macromolecules?

Posted on by Muna Meyer

What are indicators for macromolecules?

1.1 Aim

Indicator Macromolecule Positive test
Iodine solution Complex carbohydrate Black
Iodine Simple sugars Colourless
Sudan III Lipid Orange
Biuret solution Protein Violet

What are the 4 main macromolecules and their functions?

Nucleic acids: Stores and transfers info.

  • Carbohydrates; Store energy, provide fuel, and build structure in body, main source of energy, structure of plant cell wall.
  • Lipid: Insulator and stores fat and energy.
  • Protein: Provide structural support,transport, enzymes, movement, defense.

    • What are the 4 macromolecule categories?

    11.1 Introduction: The Four Major Macromolecules These are the carbohydrates, lipids (or fats), proteins, and nucleic acids. All of the major macromolecule classes are similar, in that, they are large polymers that are assembled from small repeating monomer subunits.

    How are indicators used to detect macromolecules?

    We can use indicator solutions to test for the presence of our macromolecules of life! We say that an indicator test is positive when the color change indicates that the macromolecules is present and negative if there is no color change indicating the lack of the macromolecule.

    What is Sudan IV test?

    SUDAN IV. The Sudan IV test will test positive for lipids. The test procedure involves adding a few drops of Sudan IV to the test solution. Sudan IV is a dye that will stain lipids. If no lipids are present then the dye will sink to the bottom of the test tube.

    What are the four major macromolecules?

    How do you identify a molecule?

    Steps Used to Find the Shape of the Molecule

    1. Draw the Lewis Structure.
    2. Count the number of electron groups and identify them as bond pairs of electron groups or lone pairs of electrons.
    3. Name the electron-group geometry.
    4. Looking at the positions of other atomic nuclei around the central determine the molecular geometry.

    What are the 6 macromolecules?

    Types of biological macromolecules

    Biological macromolecule Building blocks
    Carbohydrates Monosaccharides (simple sugars)
    Lipids Fatty acids and glycerol
    Proteins Amino acids
    Nucleic acids Nucleotides