4.2 Photosynthesis

Question 1

Photosynthesis Formula

Answer 1

6CO2 + 6H2O –> C6H12O6 + 6O2

Question 2

Reactants in Plants

Answer 2

H2O
CO2

Question 3

Products in Plants

Answer 3

Glucose
O2

Question 4

Needed in Plants

Answer 4

Sunlight
Chlorophyll

Question 5

Light Dependent Reactions

Answer 5

• Photolysis: light energy is used to split a water molecule into Oxygen, Hydrogen ions and electrons
• leads to production of ATP
• Oxygen is released as a waste product
• Sunlight splits water into oxygen, hydrogen ions and electrons –> then used to create NADPH and ATP

Question 6

Light Independent Reactions

Answer 6

• The Calvin Cycle
• hydrogen ions, electrons and carbon dioxide are combined through a complex metabolic pathway into carbohydrates
• CO2, NADPH, and ATP are used to create Glucose

Question 7

Limiting Factors

Answer 7

• factors that will limit rate of photosynthesis
• key limiting factor is the one furthest from its optimum

Question 8

Most Important Limiting Factors

Answer 8

• Carbon Dioxide Concentration
• Temperature
• Light Intensity