(a(i))[2]
Complete the equation for photosynthesis by filling in the missing substances. ................. + ................. $\rightarrow \text{C}_6\text{H}_{12}\text{O}_6$ + .................$\text{O}_2$.
(a(ii))[2]
State two conditions needed for photosynthesis to occur.
(a(iii))[1]
Explain how photosynthesis can be used to supply a renewable energy source.
(b(i))[1]
Starch is produced when simple sugars polymerise. As this occurs, water is formed. What type of polymerisation is this?
(b(ii))[2]
Draw the partial structure of starch. Show at least two repeat units.
(b(iii))[1]
Name the process that converts starch into simple sugars.
(c)[1]
The partial structure of poly(lactic acid) is shown. On the diagram, draw a ring around every atom in one ester linkage.