Created: March 14

In this note, you will be able to view basic information about cellular energetics otherwise known as photosynthesis and cellular respiration

Information: click the arrow to view information

The sun is the main source of energy for most living things

Stages of photosynthesis:

• Plants and other organisms use energy from the sun to convert carbon dioxide and water into oxygen and sugar/glucose

  • Stage 1: Chloroplasts in plant cells capture energy from sunlight

  • Stage 2 - The captured light energy is used to produce sugars and oxygen from water and carbon dioxide

    • Carbon dioxide enters through the stomata

    • Water enters through the roots

    • Sugars are used by plant cells for energy

    • Oxygen exits through the stomata

  • Chlorophyll is the pigment that conducts photosynthesis

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  • Chloroplast is the organelle that conducts photosynthesis

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Stages of cellular respiration:

• Cells break down simple food molecules and release the energy they contain

  • Stage 1: In the cytoplasm, glucose is broken down into smaller molecules while small amount of energy is released

  • Stage 2: In the mitochondria, the smaller molecules combine with oxygen to produce water and carbon dioxide while large amounts of energy are released

    • Mitochondria is the organelle conducting cellular respiration

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