Uses of Glucose Produced in Photosynthesis

Overview

• This lecture focuses on how glucose, produced during photosynthesis, is utilized by plants.
• Photosynthesis involves the conversion of carbon dioxide and water into glucose and oxygen using light energy.

Main Uses of Glucose

1. Energy Release

• Respiration: Glucose is used in the process of respiration to release energy.
  • Location: Takes place in the mitochondria.
  • Timeframe: Unlike photosynthesis, respiration occurs continuously, both day and night.

2. Storage

• Starch Production: Glucose is converted into starch.
  • Function: Starch is an insoluble storage molecule.
  • Conversion: Can be converted back to glucose when needed, e.g., at night.

3. Fats and Oils

• Conversion to Fats/Oils: Glucose is transformed into fats and oils (e.g., olive oil).
  • Purpose: Acts as a storage form of energy in plants.

4. Cellulose

• Cell Wall Component: Glucose is used to synthesize cellulose.
  • Role: Provides strength to the plant's cell wall.

5. Amino Acids and Proteins

• Amino Acid Production: Glucose is used to produce amino acids.
  • Protein Synthesis: Amino acids are building blocks for proteins.
  • Nutrient Requirement: Plants absorb nitrate ions from soil to produce amino acids.

Additional Notes

• Examples of protein-rich foods derived from plants include peas.
• For further practice, refer to the question section in the provided workbook link.

Conclusion

By understanding these uses, you can comprehend how plants utilize glucose effectively beyond just energy production.