Free Radicals

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7 Terms

1
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what is a byproduct of aerobic respiration?

free radicals

2
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free radicals

highly reactive molecules with unpaired electrons that can damage cells if not neutralized

3
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2 types of free radicals produced during aerobic respiration

  1. superoxide anion (O2-)

  2. hydrogen peroxide (H2O2)

4
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what enzyme neutralizes superoxide anion (O2-)?

superoxide dimutase (SOD)

5
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what enzyme neutralizes hydrogen peroxide?

catalase

6
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why is hydrogen peroxide effective in deep wounds?

  1. it can penetrate the tissue and reach anaerobic bacteria that thrive in the absence of oxygen

  2. releases oxygen bubbles and helps lift dirt, debris, and dead cells

7
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why isn’t hydrogen peroxide as effective on more superficial wounds?

  • Rapid Breakdown: Enzyme catalase breaks down hydrogen peroxide into water and oxygen quickly.

  • Limited Penetration: Only affects surface bacteria, not deeper into the wound.