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Properties of Macromolecules quiz

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  • What is polymerization in the context of macromolecules?
    Polymerization is the sequential formation of large structures from individual subunits, such as polysaccharides, nucleic acids, and proteins.
  • Which macromolecule is NOT formed by polymerization?
    Lipids are not formed by polymerization; they are created through a different process.
  • What type of reaction forms bonds between monomers during polymerization?
    Condensation reactions form bonds between monomers, releasing water in the process.
  • What is released during a condensation reaction?
    A water molecule is released when monomers bond together in a condensation reaction.
  • How are macromolecules broken down in cells?
    Macromolecules are broken down by hydrolysis reactions, which add water to break apart polymer chains.
  • What is the main difference between condensation and hydrolysis reactions?
    Condensation reactions release water to form bonds, while hydrolysis reactions use water to break bonds.
  • Why is the sequence of monomers important in macromolecules like nucleic acids and proteins?
    The sequence determines the genetic code and protein structure, which significantly impacts biological function.
  • What are stereoisomers in macromolecules?
    Stereoisomers are mirror-image forms of macromolecules resulting from an asymmetric carbon atom.
  • What is a chiral center in the context of stereoisomers?
    A chiral center is an asymmetric carbon atom with different groups attached, leading to stereoisomer formation.
  • Which form of amino acids is used in proteins?
    Proteins are made up of L-amino acids; D-amino acids exist but are not used in protein synthesis.
  • What is the significance of stereoisomers in biological functions?
    Certain biological functions can only use one stereoisomer form, making their structure crucial for activity.
  • What are non-covalent bonds and why are they important in macromolecules?
    Non-covalent bonds are weak individually but become strong when additive, influencing macromolecule structure and function.
  • How do non-covalent bonds affect macromolecule conformation?
    They allow for strong fits between interacting molecules and affect the structure and formation of macromolecules.
  • What types of non-covalent bonds can form between amino acids?
    Hydrogen bonding and electrostatic interactions are examples of non-covalent bonds between amino acids.
  • Why are non-covalent bonds described as additive?
    Their collective strength increases as more bonds form, allowing for strong interactions despite individual weakness.