Cell Structure: Subcellular Components

AP Biology· difficulty 4/5

Peroxisome fatty acid breakdown H2O2 -> H2O + O2 (catalase) single-membrane organelle

What is the role of catalase in the peroxisome?

  • A

    Synthesizes ATP from glucose

  • B

    Detoxifies H2O2 produced during oxidations into H2O and O2

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  • C

    Replicates DNA inside the organelle

  • D

    Produces lactic acid from pyruvate

Explanation

Peroxisomes generate hydrogen peroxide as a byproduct of beta-oxidation; catalase rapidly converts H2O2 to water and oxygen, preventing oxidative damage.

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