Photosynthesis

Question 1

Define photosynthesis

Answer 1

Process whereby light energy is converted into chemical energy for a plant to carry out metabolic activities.

Question 2

Equation for photosynthesis

Answer 2

CO2 + H2O —(light)—> O2 + glucose

Question 3

Where does the light dependent stage occur?

Answer 3

Thylakoid membrane

Question 4

What are the products of light dependent stage?

Answer 4

ATP, O2, hydrogen

Light dependent reaction splits the water molecules into oxygen and hydrogen. Oxygen is released as a by-product while hydrogen ‘goes to the’ light independent stage.

Question 5

Where does the light independent stage occur?

Answer 5

Chloroplast stroma

Question 6

What are the products of light independent stage?

Answer 6

Carbohydrates (namely glucose) is produced when CO2 reacts with hydrogen extracted in light dependent reaction.

Question 7

Function of stroma in photosynthesis?

Answer 7

Liquid stroma is transparent therefore does not block light. Captures CO2 which is used in light independent reaction.