Enzymes and Their Functions in Biochemistry
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Enzymes and Their Functions in Biochemistry

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Questions and Answers

What is the primary function of enzymes in biological systems?

  • To provide structural support and shape to cells
  • To transport molecules across cell membranes
  • To store genetic information and transmit it to offspring
  • To accelerate chemical reactions by lowering activation energy (correct)
  • Which of the following is NOT a function of enzymes?

  • Transporting oxygen throughout the bloodstream (correct)
  • Generating energy in the body
  • Reorganizing the internal structure of the cell
  • Breaking down large molecules into smaller ones
  • What is the name of the enzyme involved in the synthesis of energy (ATP) in the body?

  • Hydrolase
  • Ligase
  • ATP synthase (correct)
  • Protein kinase
  • Enzymes are categorized as which type of molecule?

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

    Which of the following is NOT an example of a biochemical reaction catalyzed by enzymes?

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

    What is the term used to describe the specific molecule that an enzyme binds to and acts upon?

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

    Which of the following statements is TRUE regarding enzymes?

    <p>Enzymes increase the rate of chemical reactions by lowering activation energy</p> Signup and view all the answers

    Which enzyme is involved in the process of signal transduction?

    <p>Protein kinase</p> Signup and view all the answers

    Study Notes

    Enzymes

    • Enzymes are protein catalysts that increase the velocity of a chemical reaction without being consumed during the reaction.

    Functions of Enzymes

    • Enzymes help in signal transduction by catalyzing the phosphorylation of proteins, often involving protein kinase.
    • They break down large molecules into smaller substances that can be easily absorbed by the body.
    • Enzymes generate energy in the body, with ATP synthase being the enzyme involved in the synthesis of energy.
    • They are responsible for the movement of ions across the plasma membrane.
    • Enzymes perform various biochemical reactions, including oxidation, reduction, and hydrolysis, to eliminate non-nutritive substances from the body.
    • They reorganize the internal structure of the cell to regulate cellular activities.

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    Description

    Learn about enzymes, protein catalysts that increase chemical reactions, and explore their roles in signal transduction and phosphorylation of proteins.

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