Lesson 6.2: Uses of Glucose & Mineral Nutrition
Where does photosynthesis glucose go?
Core Syllabus Focus: Glucose from photosynthesis has 5 main uses. Plus: Plants need Nitrate (for amino acids/proteins) and Magnesium (for chlorophyll).
The Glucose Factory
Photosynthesis makes glucose, but it's just the starting ingredient! Drag glucose to each destination to see what it becomes.
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GLUCOSE
C₆H₁₂O₆
👆 Drag me!
Mitochondria
Immediate energy release
→ Energy (ATP)
Root Storage
Insoluble energy store
→ Starch Grains
Cell Wall
Structural support
→ Cellulose Fibers
Phloem
Transport sugar (less reactive)
→ Sucrose
Flower
Attracts pollinators
→ Nectar
Examiner Trap: Students often forget to mention why plants convert glucose to starch. Answer: "Starch is insoluble, so it doesn't affect osmosis or water potential in storage cells."
📚 Lesson 6.2 Summary
5 Uses of Glucose:
• Respiration → Energy
• Starch → Storage (insoluble)
• Cellulose → Cell walls
• Sucrose → Transport
• Nectar → Attract pollinators
2 Key Mineral Ions:
• Nitrate: Makes amino acids → proteins
Deficiency: Stunted growth
• Magnesium: Makes chlorophyll
Deficiency: Chlorosis (yellow leaves)
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