photosynthesis

Question 1

photosynthesis equation

Answer 1

Equation: Water + Carbon Dioxide → Glucose + Oxygen
- 6H2O+6CO2 → C6H12O6 + 6O2

Question 2

light dependent reactions

Answer 2

1. Thylakoid absorbs sunlight to start reactions
2. Reactions split water molecules into hydrogen and oxygen ions
3. Oxygen released into atmosphere
4. Hydrogen ions used to make ATP (powers next step)

Question 3

calvin cycle

Answer 3

• Occurs in stroma of chloroplast
• Carbon dioxide from air → converted to glucose using enzymes + ATP
• 6 molecules of CO2 to make a glucose molecule
• When Calvin Cycle finishes → ATP used up and becomes ADP for the light dependent reactions

Question 4

rate of photosynthesis

Answer 4

• Light Intensity
  - Too little/much light or wrong kind of light will slow down growth of plants
• Carbon Dioxide Levels
  
  • Plants take in CO2 from the atmosphere through tiny holes in leaves
  • Too much CO2 → temperature to rise which could damage some plants
• Temperature
  
  • High temperatures can interfere with photosynthesis because of the denaturing of enzymes