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Ontario Secondary (Grade 9-12) Enzymes — practice questions

Explore 1 free Enzymes questions in Ontario Secondary (Grade 9-12) Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Enzymes questions and exercises with answers

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Spot the false enzyme claimRead the answer and worked solution →

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Spot the false enzyme claim

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Questions
  1. False statement
    An enzyme changes the free energy change of a reaction
    Statements
    1. An enzyme lowers the activation energy of a reaction
    2. An enzyme changes the free energy change of a reaction
    3. An enzyme is unchanged once the reaction is over
  2. False statement
    Anabolic pathways are exergonic
    Statements
    1. Catabolic pathways release stored energy
    2. Anabolic pathways need an energy input
    3. Anabolic pathways are exergonic
  3. False statement
    Every vitamin acts as a cofactor
    Statements
    1. Every vitamin acts as a cofactor
    2. Cofactors are inorganic ions like iron and magnesium
    3. Coenzymes are organic helper molecules
  4. False statement
    ATP is a very stable molecule
    Statements
    1. Hydrolysis of ATP releases free energy
    2. ATP is a very stable molecule
    3. ATP carries three phosphate groups
Instructions
Tap the one false statement in each set of three about enzymes, helpers and ATP.
_Source: OpenStax Biology 1e, section 6.5 Enzymes_

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