Which term describes the splitting of water molecules in the presence of light t2 9fiwsp3et.bps ,x8fwlx 8o 6o produ8.sifxf 9wt ,pexbps l3 wo862ce electrons, hydrogen ions and oxygen molecules?

  Which of the following is involved in carbon fixatq7ii6+aj qa5 px,ku t5ion during photosynthesis?

  The diagram below shows an eq1mfq m mmt/)4xperiment investigating the effect of temperature onqt4)m/qf1m mm the 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?0,nmbsw l j1l2

  The Hill reaction shows electron transfer in ip8s1zahkd vlysg22n8 d4 c k/hu0x9r :solated chloroplasts for the light-dependent reactions of photosynthesis. Achp 8s29nsa/l1 u240d r8hdkv:yz gkx blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of the natural final electron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below pn6yz641 efq f6ex fk sk)f1q:shows part of a chloroplast in a leaf.Which of the following structures are found in the part of a chloroplast label qf sq: k461eefp6)z1xff y6knled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the razwx cws- d40429xbyo nte of photosynthesis at different temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on then00n*w2lj k1elh0wieet 7 w1y rate of photosynthesis.

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

  The following procesiyv)7e1 hxm6b2mzee 0 ses occur in 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 where chemiosmosis takes place in photosyydf(o*q /lbi+ nthesis andb /f(yiq+ o*ld aerobic cell respiration?

Coleus blumei is an attractive houseplant wwfu y5 k0us-)ca0+r0x ywcir/ith 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 xf3o+ky ;t4 yoof hydrogen ions in the light-dependent reactions for phoxk3oyof4 ;yt+tosynthesis?

  Which of the following clyy1jp cyts7wp;f -40n o l,(lorrectly 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 reaction of5nhqdwku6x jv8+0md ) oph /u/ photosynthesi5 kwu x /mdn8+6jh0pod/)vhqu s?

  Which structure of the chloroplast is mostah- bj;qe3:z-2imok le6 i-rt involved in the production of reduced NADP and ATP?r-etihlk -mi 6 q :a-3obz2je;

The diagram shows the separation of photosy-lz n ;,c/jtpcnthetic pigments using the thin-layer chromatography (TLC) technique in the solvent propanonpzltj nc,c/;- e.

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 cli. 95fhijt ,7cd;z2 y b(gjzvwcmate change on the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containindzf,c972wz; g 5jy.cb(h itjv g 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 reprmwp+c2 -egfb44vi9 y(vc1hs yesents the correct range of wavelengths of light that are absorbed and reflected by chlorophyll for photosynpwvfs4e c4v-+y g (mh2ic1b9y thesis?

Photosynthesis is a process where carbon compounds areoc(eibkyq :8x h 9l8n- produced in the presence of light(lhcbq 9ik-8n8x: oey.
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 across the thylakou:bjq55y sx1rfcix)(z6(un a id membrane in the light-depenb( x)(:cq5 s5uynz6fujaxri1dent reactions of photosynthesis?

  What is the process that takes place before excited electronsa9m3(hj 6-: s lrpyeepj. g.ze are transferred from photosysteap:3 h 6 el -ysg(jzmjer..9pem II to photosystem I?

  In which structure of sp fdvy8w2it9m ai+93cclp:f)4 cj 7+1frextthe chloroplast does ribulose bisphosphate undergo carboxyppct3f c)2 +w1 r+m ie7vsxf89a cy9itdf:4jllation?

  Which products are formedan fp,cwq/(h1o7y9z (lv/wg a at the end of the light-dependent and light-independenth/(zvy1g l qwn,a7ow9 c(f /ap reactions?

  Thin-layer chromatography can be used to sepawknr k.*s) t18fph0serate photosynthetic pigments. Below is a diagram showing the separation of .hn) ftsws1p 0k*8k erpigments in this way. Rf values are used to work 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 the ult3 bd:+ gvrh**h lu,k uu:cc7fsrastructure 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 acti42f 72a 6xkg*bcmnkbton spectrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respirat *hlfy:q7(hv sion 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 enrichment experiments are used o+lq2o uvx5/ntkjui8*9 w .tfto predict future rates of photosynthesis and plant growth. Which of the following is an advantage of enclosed *vlk j9i+ /u 5wn8x.ot tf2uoqgreenhouse experiments over free-air carbon dioxide experiments (FACE) experiments, when conducting carbon dioxide enrichment experiments?

  In algae, what is the role of pxb4;t(5c3tdvw/zq 7 3fsd u hcarbon dioxide in photosystem II, and what form is it found ipt;w( z btch s d/q5xfuv43d37n?

  What were the results obtained from the lollipop experiment that ena mnbrhpyf05;, bled Calvin to determine the order of the light-independen0fmb5h,np r ;yt reactions of photosynthesis?