Which term describes thopj-6mza 0;bvphk u ,3e splitting of water molecules in the presence of light to produce electrons, hydrogen ions and oxygen moleculesvzb0-hm3pj6 pkua ;o,?

  Which of the following is invo8s *k+k.p31rzil zhe .r c/fdmlved in carbon fixation during photosynthesis?

  The diagram below shows an experiment investigating the effect om scfe 4fkahc309 nfx52opd:foxb0 ,-f temperature on fhos:k4fx dop0- fc 9fx nmc0352ba,ethe rate of photosynthesis. Which of the following is not a method of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represent? bu7evl;8 a( ge,om;a)4 skzwn

  The Hill reaction shows electron transfer ;g nzoj706ldu in isolated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of the natural final electron acceptor. What is the final el6jz u0gdln 7;oectron acceptor in photosynthesis?

  The micrograph below shows part of a chloroplast in a leaf.Whhkc-u:wxpsuo h y--;+ ich of the following stru uo;cx:-w k psuh--y+hctures are found in the part of a chloroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at diff 86b+s-c-s yc ptovzn(erent temperatures.

What conclusion can be made?

  The graph shows the effect of light intena,3pd v a.fm9dsity on the rate of photosynthesis.

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

  The following processes occur 0rxb .qem01k 43pe5qe sdiqi8in the Calvin 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 correctly shows:jd7v an 83h w/wyetn1 where chemiosmosis takes place in photosynthesis and aerobic celldwnnve1:ythaj 7w8 /3 respiration?

Coleus blumei is an attractive h ,k 7dt(gtzvu9ouseplant with red leaves.

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-dependent reactions /h, vfg2lru5arw 3lo: for phot2hv,r3l u: arow l5/gfosynthesis?

  Which of the following cr 5md(rijtj2n- vhr;6orrectly describes photosynthesis 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 reacb f; ii8h(s s3w0u uuq/l93avdb/4 zqrtion of photosynthesis? u3swh;lfv3d8 u0b iazb9 (rqqi s/u4/

  Which structure of the chp5ct 2.b4)ewxvomek4v 3,m xu loroplast is most involved in the production of reduced NADP and ATP?w t)m3x 4 c bxeuvov.p42kme,5

The diagram shows the separation of photosynthetic pigments usingb ;3d2/ysuulz 26ubyk the thin-layer chromatography (TLC) technique in the solventd yu k2bl3y;zsb2u6u/ 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 the impacts of cl-1zxjzmcxy.kesd5 ,( d ul 2*bimate change on the rate of photosynthesis, pondwee*,bdy5e umjsxl.- z 1c2(dx zkd was placed in a number of sealed conical flasks, each containing a solution of water 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 correch )j/kbm,n,e ssm) vi4pk /euc2*up v/t range of wavelengths of light that avs/*ppn ee vk 42mm,/) /b,ksjhcuu)ire absorbed and reflected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compounds a,dp46 ngub lb+/aqphmf c-(p 5re produced in the presence of lq/ dnmua6+plghbp 5b f4-,(pcight.
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 proton gradient acroo(5wdnt 5.swui4a0fb ss the thylakoid membrane in the light-dependent reactions of photosynthesu. fnww 50td5iab4 (sois?

  What is the process that takes place before excited ele+.d+ sb*pjxju (evrrh 40e(vnctrons are transferred from e.reuj+vbp+d 04 (j( hxsn *vrphotosystem II to photosystem I?

  In which structure of the chloroplast does ribulose bisphosphate undergo carcs mrt z a9n/1gvj7.-zboxylation?r /mn. s-zv7zjat1g c9

  Which products are formed at the end of the light-dsk,cm su4 n(k+uj7qt3kr-1 vaependent and light-independentk7rsjku1c 3k4m(u+sq t- nv,a reactions?

  Thin-layer chromatography can be used to separate photosynthetic pigment+*gy ei)w5 cojs. Below is a diagram showing the separation of pigments in this way. Rf values are used to work out what pigments are present in the leaf 5 y)*oegiw+jcextracts.
Which of the following are the measurements that need to be taken to calculate the Rf values?

The diagram below shows the ultrastructure of a chloropl , - bftv82ibod 34c+,gt6c dm)jdrmwnast.

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 spectr0rkbmxfuq-;n9 )kg6kslwa, 7b ( k ec.um for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-catalysed reactions6i uriz j.3rx af:zqc4/ ln0 +pi7js4w.
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 enrichment experiments are used to predict future rates(wiu* rfn7j r8 of photosynthesis and plfw7 urin*8(j rant 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 experiments?

  In algae, what is the role of carbon dioxide in photosystem II, and wh,h+yu2f (gfsv at form is it found in?ugf(f s2h+y, v

  What were the results obtained fro(h3x o1lw:qqt:f:rw 0i om x;em the lollipop experiment that enabled Calvin to determine the order of the light-independent reactions of photo rot(lim:whq0qw;:o:xfx 3e1 synthesis?