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Intro to Coenzymes quiz

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  • Which of the following statements correctly describes cofactors and coenzymes?
    Cofactors are non-protein chemical compounds that assist enzymes, while coenzymes are organic molecules that act as carriers for chemical groups or electrons during enzymatic reactions.
  • Which of the following is an accurate description of a coenzyme?
    A coenzyme is an organic molecule that binds to an enzyme and assists in enzyme function, often by acting as a carrier for chemical groups or electrons.
  • What is the role of a coenzyme?
    Coenzymes facilitate enzymatic reactions by acting as carriers for chemical groups or electrons, enabling the enzyme to perform its function effectively.
  • What is the primary function of ATP as a coenzyme?
    ATP stores energy in its phosphate bonds, which can be used to drive various biochemical reactions.
  • How does NAD+ function in enzymatic reactions?
    NAD+ acts as an electron carrier in oxidation-reduction reactions, essential for energy transfer in metabolic processes.
  • What role does FAD play in metabolic processes?
    FAD participates in redox reactions, acting as an electron carrier in various metabolic pathways.
  • Why is coenzyme A important in acyl transfer reactions?
    Coenzyme A carries acyl groups, facilitating their transfer in metabolic reactions, which is crucial for energy production and synthesis of biomolecules.
  • What structural component is common among many coenzymes?
    ADP is a recurring structural component found in many coenzymes, such as NAD+, FAD, and coenzyme A.
  • What is the significance of ribose sugar in coenzymes?
    Ribose sugar is part of the structural backbone of coenzymes like ATP and NAD+, providing stability and connectivity to other functional groups.
  • How do coenzymes differ from cofactors?
    Coenzymes are organic molecules that assist enzymes, while cofactors can be either organic or inorganic substances that enhance enzyme activity.