photosynthesis

Question 1

LDR location

Answer 1

thylakoid membranes

Question 2

photolysis

Answer 2

splitting of water into o2, H+ and e-
O2 used for resp or diffused out through stomata
H+ and e- combined with NADP to make NADPH
e- also for replenishing e- lost from PSI

Question 3

photoionisation

Answer 3

chlorophyll absorbs light energy, exciting electrons causing them to leave and move to ETC

Question 4

chemiosmosis making ATP

Answer 4

making ATP: protons actively transported into thylakoid membrane, creating electrochemical gradient. Protons move up ATP synthase via facilitated diffusion, which in turn causes reaction of ADP + Pi = ATP

Question 5

chemiosmosis making NADPH

Answer 5

NADP along with e- and H+ join to form NADPH

Question 6

chemiosmosis replenishing e-

Answer 6

photolysis of water forms e- as well as o2 and H+
e- used to replenish e- lost in PSII

Question 7

LIR location

Answer 7

stroma

Question 8

calvins cycle recite

Answer 8

CO2 combines with RuBP (5C) to make 2x GP, catalysed by rubisco. (6C)
GP is unstable so 2x GP reduced to 2x triose phosphate using ATP and NADPH (6C)
1 carbon molecule is used towards forming 6ose sugar
rest of ATP is used to regenerate RuBP from remaining carbon compounds.

Question 9

Temp limiting factor

Answer 9

if too hot or too cold,
can be maximised via heating in greenhouse

Question 10

Light limiting factor

Answer 10

if too dark
can be maximised via artificial light

Question 11

Co2 limiting factor

Answer 11

not enough Co2 in atmosphere
can be maximised by burning fuels or paraffin burners.