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Cellular Respiration

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Topics

  • Definition: Aerobic Respiration
  • Definition: Anaerobic Respiration
  • Key Points: Cellular Respiration
CBSE: Class 10

Definition: Aerobic Respiration

The breakdown of glucose in the presence of oxygen to produce carbon dioxide, water, and energy is called aerobic respiration.

CBSE: Class 10

Definition: Anaerobic Respiration

The breakdown of glucose in the absence of oxygen to produce alcohol or lactic acid and a small amount of energy is called anaerobic respiration.

CBSE: Class 10

Key Points: Cellular Respiration

  1. Glucose is first broken down in the cytoplasm into a 3-carbon molecule called pyruvate, releasing some energy.
  2. In the absence of oxygen, pyruvate is converted into ethanol and carbon dioxide (in yeast) or lactic acid (in muscles), releasing less energy.
  3. In the presence of oxygen, pyruvate is broken down in the mitochondria into carbon dioxide and water, releasing a large amount of energy.
  4. The energy released during respiration is used to make ATP, which is the energy currency of the cell and used for all life processes.

Shaalaa.com | Respiration in Plants part 10 (Krebs cycle: Step 1 to 5)

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Respiration in Plants part 10 (Krebs cycle: Step 1 to 5) [00:10:36]
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