4.9 Photosynthesis

Question 1

Balanced Equation of Photosynthesis

Answer 1

6CO2 + 6H2O → C6H12O6 + 6O2.

Question 2

Organ that is specialised in photosynthesis.

Answer 2

Leaf

Question 3

Where does photosynthesis take place ?

Answer 3

Chloroplast

Question 4

3 main stages of photosynthesis

Answer 4

Light harvesting , light dependent , light independent

Question 5

Light harvesting summary

Answer 5

The absorption of light in the thylakoid , a consequence of which is to raise the energy level of the electrons chlorophyll

Question 6

Light dependent stage

Answer 6

Energised electrons are used to make the energy
-rich compound ATP and reduced NADP. These reactions take place in the thylakoid membranes

Question 7

Light Independent stage

Answer 7

The products of the light reaction are used to make simple carbohydrate.
Carbon dioxide is fixed as part of the cyclical series of reactions that take place in the stroma

Question 8

Light Harvesting

Answer 8

Chlorophyll and other pigments are located in the thylakoid membranes they arranged in clusters called an atenna complex . A molecule of chlorophyll a is called the primary pigment with is at he base of the complex in region called the reaction centre