Which term describes the splitting of water molecules in the presence of ligh:sz2wg(pbpjm.zc:l 7nv p 00vt to produce electv p(jmb pwlnv.: gs72z0 pcz0:rons, hydrogen ions and oxygen molecules?

  Which of the following is involved in carh5t )jl)s84hu: gg5 gq2jidvqc pg) l5bon fixation during photosynthesis?

  The diagram below shows an experiment investigating the effect of temperat (6jvk/twiq6s :)ljmqo jt0e1 ure on the rate of photosynthesis. Which of the following is not a method of keeping a controlled variable at a constant valt6) t(0mleikq qw6joj1j /s:v ue throughout this particular experiment?

  What does X represent? 3feeps; c)7df

  The Hill reaction shows electron transfer in isolated chloroplasts for the licien:6+k y5v ) ggfsk.+g5v hbght-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of the natural final electron acceptor. What is the final electron acceptor in photosyn:fnbchgevvg+k5)s+i g ky 56.thesis?

  The micrograph below shows part of a chloroplast ingr )fu,azmr )* um8r4x a leaf.Which of the following structures are found in the part of a chloropla)u,gxur)m*r r8 m az4fst labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at different temperatures tbc-*ftw9e6n t4h /vi.

What conclusion can be made?

  The graph shows the effect of light intensit5/x 7 beb7a:sf uiz1uxy on the rate of photosynthesis.

What can be concluded from the results presented in this graph?

  The following processes occur in the 9eu;zm n z3px/ 1sdo.eCalvin cycle.
I. Ribulose bisphosphate regeneration
II. Carbon dioxide fixation
III. Glycerate-3-phosphate is reduced to triose phosphate
Which is the incorrect sequence for these processes?

  Which of the following correctlycglm:o5 gkg+g-79hcfz 2oee) g8y cp / shows where chemiosmosis takes place in photosynthesis and aerobicg gf:e mcoog/gl g y)e8c29- +5zcpk7h cell respiration?

Coleus blumei is an attractive houseplant with red leavesjw/ev( qek7v6.

1.Determine with a reason whether or not this plant is still able to conduct photosynthesis with red leaves.
2.Red leaves absorb and reflect different coloured light than green leaves. Distinguish between red light and green light in the visible spectrum.
3.Outline how limiting factors affect the rate of photosynthesis.
4.Explain how oxygen produced during photosynthesis can be used during respiration

  What is the main source of hydrogen ions in the light-depengqp 5 a/:1y-3xmfci yqdent reactions for photosynth5 fqga-c/13p ymyq x:iesis?

  Which of the following correctly describes photosynthesiyz 4aj:mk k50qs or respiration?

	Reaction	Products	Anabolic or Catabolic	Endothermic or Exothermic
A	Photosynthesis	Carbon dioxide, water	Catabolic	Exothermic
B	Respiration	Oxygen, glucose	Catabolic	Exothermic
C	Photosynthesis	Oxygen, glucose	Anabolic	Endothermic
D	Respiration	Carbon dioxide, water	Anabolic	Endothermic

  Which type of reaction is occurring in this light-independent rd)fy r0 bdxl9xh-mof3-1h e( reaction of photosynthesi( 013dhom fedy)rfrxhb9 --x ls?

  Which structure of the chloroplast is most involved in the production of re8)ixfr.ay ifr.(t4 ceduced NADP and Ai4ae. t)8 c.ifrx( yfrTP?

The diagram shows the separation of photosynthetic pigmentmx qh7 ,ul 8)s-grpn(ls using the thin-layer chromatography (TLlsung p8 ,(7rxlmq-)hC) technique in the solvent propanone.

1.Identify a pigment that is present in cabbage but not in spinach
2.Outline the method used to extract the pigments from the plant leaves.
3.1Outline what information the Rf value provides in this experiment.
2.Calculate the Rf value of Xanthophyll, showing your working.
4.Spinach also contains Lycopene, an orange/red pigment. Suggest why it is absent from the chromatogram.
5.Deduce, with a reason, what pigment X is.
6.Explain why the origin must be above the solvent at the start of the experiment.
7.Explain why it is important that the TLC plate is held by its edges when setting up this experiment.

In an investigation into qyoj +5+dq .yok *bm8(h veo5bthe impacts of climate change on the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containing a solution of waterko 5eqj*bmvo(o +yd8 .qhy+b5 and carbonic acid.

Each conical flask was placed in a water bath maintained at a constant temperature. At regular time intervals, samples of the solution were taken from each conical flask and measured using a pH probe.

The results are shown in the table.

1.1Identify the dependent and independent variables in this investigation.
1.2State one variable that must be kept constant in this investigation to ensure the results are valid.
2Describe the relationship between the temperature, time and pH of the solution.
3Predict the pH of the dilute carbonic acid solution at $40^{\circ}C$ after 60 minutes.1
4.1Calculate the rate of change in pH between 30 - 40 minutes and 40 - 50 minutes for the trial kept at $40^{\circ}C$.
4.2Suggest a reason for the difference in the rate of change you calculated in (i).
5.Suggest one improvement to the design of this experiment and state whether it would increase the accuracy or reliability of the results.

  Which visible spectrum represents the correct range ot; aho3d.u8 e* h1flbhf wavelengths of light that are absorbed and reflected by chlorophyll for photosyntheftob.*8lh; 13 dahuh esis?

Photosynthesis is a process where carbon compounds are produced in the presencef:4w pgu5ah 6b.l5nk.nx v3n09 llju v of : bw 4n0 ug3.fvnpl hl5k j.5nvx9a6lulight.
1.Draw and label an action spectrum for photosynthesis in plants.
2.Outline how energy is used to produce glucose from carbon dioxide.
3.Describe an experiment investigating the effect of carbon dioxide concentration on the rate of photosynthesis.

  What is used to generate a e hahl,,qdb:4 proton gradient across the thylakoid membrane in the light-dependene adh:,,hlb4 qt reactions of photosynthesis?

  What is the process that takes place before excited electrons are tr8b(b8*xsze g l-9zszu ansferred from photosystem Iz89u sezb gz(s-b8*xlI to photosystem I?

  In which structure of the chloroplast does ribulose bisphosphate uw:jy/mludin7)hzbg2 2h x3 i (ndergo carboxylatu/: 2jgwmy2ld ix n( zi7b)h3hion?

  Which products are formed at the end of the light-depend3w85 a3tqbf ement and light-independenqm3 8e fbt3a5wt reactions?

  Thin-layer chromatography can be used to separate photosynthetic pigm6/dk jrce4oh) ents. Below is a diagram showing the separation of pigments in this way. Rf values are used to work/ ch)drk j6oe4 out what pigments are present in the leaf extracts.
Which of the following are the measurements that need to be taken to calculate the Rf values?

The diagram below shows thenxk4e.zy k 5v2ki* 4zda1;mwi ultrastructure of a chloroplast.

1.Identify the enzyme that catalyses the process of carbon fixation and is found at Y.
2.Deduce, with a reason, which structure of the chloroplast has the lowest pH value.
3.State the name of the structure found in chloroplasts that consists of stacks of fluid-filled sacs, which give the chloroplast a larger surface area for light absorption.
4.Describe the factors that would increase the number of starch grains in structure Y.
5.Distinguish between photosystem II and photosystem I.
6.Describe the process of photophosphorylation in photosynthesis.

  The graph shows the action spectrum for phot.pbt9 2 ox3zkposynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respira,e2wlwi0 t-b5kghii nzhh4 90eaoi6 -tion are enzyme-catalysed reactions.
1.Outline the role of carbon dioxide in photosynthesis.
2.Describe the technological advancements and experimental tools that were used in Calvin’s experiment on photosynthesis.
3.Compare and contrast the light-dependent and light-independent reactions.

  Carbon dioxide enricjkl b cd6tr9e:7o :m4qhment experiments are used to predict future rates of photosynthesis and plant growth. Which of the following is an advantage of enclosed greenhouse experiments over free-air carbon dioxide experiments (FACE) experiments, when conducting carbon dioxide enrichment exmtdebo q j4 7cl9kr6::periments?

  In algae, what is the role of carbon dioxide in photosystem II, and wyf ykx ttvu9r 2p+9)n3hat form is nk)ytrp2v f+yxu 39 9tit found in?

  What were the results obt varag)lu sw,3te: 2i gc+-z+jained from the lollipop experiment that enabled Calvin to determine the ori c)wegj l ,zt asu:r-3a+gv2+der of the light-independent reactions of photosynthesis?