Which term describes the ;zm6x53tc t3pa dq .lrsplitting of water molecules in the presence of light to produce electrons, hydrogen ions and oxygen moleculclm q rz3t 3xtpd6a;5.es?

  Which of the following is involved in carbon fixation during photosynthesia5 vzm81wj7f us?

  The diagram below showqdkjvwy0iq c/djlrh vd469 1w r/8 u9e01wmg2s an experiment investigating the effect of temperature on the rate of photosynthesis. Which of the following is not a method ofjl1u6v/1 r2gd 4d 9jyeqdri80 hkwwmcw/q0 9v keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represen28 ido l)q7yqp qhcp:(5zvkmqu-f6 5 ut?

  The Hill reaction shows electron transf1tvi rdp* p+.qer in isolated chloroplasts for the light-dependent reactions of photosyni.d+ *q1t vpprthesis. A 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 shows part of a chloroplast in a lb7c0+pi3w o- shl aq*xmkumhn /z2 y(.eaf.Which of the following structures are found in the part of a chloroplast labelledm2p 7/3-kxo .cbms +qnia0yhl (w*hzu X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at dii 0iav)* r* zfekfn6z/fferent temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on thg*e56aj( hs*c m4 pjcge rate of photosynthesis.

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

  The following processes occulmo6ni0 g;h (8v /c gm1xwp)qjr 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 i r)tf3wjnl 3d8n photosynthesis and3)nfw8rd3l tj aerobic cell respiration?

Coleus blumei is an attractive houseplant with reuc c.ydms.k0ri)m5 e: 6bpo8hd 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 hydrrjov- .7 i /rixx5,eoeogen ions in the light-dependent reactions for photosex 5xoro7v,e r iji/.-ynthesis?

  Which of the following corr jbzwx3kip r..3 mp41qwvo ikh *s (n5x2:5ineectly 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 occurrin5nrx4o y1c qe7g in this light-independent reaction of photosynthesiro1 q5 c7neyx4s?

  Which structure of the chloroplast is mos,qa2:9iphjlo/ j v/up t involved in the production of reduced NADP j: p l /9q,o/pa2iuhjvand ATP?

The diagram shows the separatiobm94ba8f8u imn of photosynthetic pigments using the thin-layer chromato a4b f8ub89immgraphy (TLC) 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 the impacts of cl-bsbo dmcuko;5u:: )himate change on the rate of photosynthesis5;:bosd-kh:m)b cuo u , pondweed 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 correct zn1;p5o;ss n krange of wavelengths of light that are absorbed and reflected by chlorophyll fp;n5noks1;s z or photosynthesis?

Photosynthesis is a proces9:8zr gnz xt3 5mlhs)gs where carbon compounds are produced in the presence of m9gntz):x slzr83 g5h light.
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 thylakoidbd5q ;tw mo)4-xi6yy95tru 3(bvytwp membrane in the light-dependent reactions of photosynth x94p5yrbi(d-y ;w3ut6tmq5 w tyvob)esis?

  What is the process that takes place before excited electrons are tran o0ujh8b5t sbtk4s; l/sferred from photosystem Isb b0su4 o /tk8hj5;tlI to photosystem I?

  In which structure of the chlorop) mraz/.)v4wnv2 ecngh4 hm992 iri lalast does ribulose bisphosphate undergo carboxylation2hrcvelran9g9 i4m4 .iwv/mh z a)n2)?

  Which products are formed at the end of the light-dependent and light-independe5zr cw4 +zde2cnt rea5 zcwz+2 rd4cections?

  Thin-layer chromatogrly h/xp d6m9v+w,f0fmaphy can be used to separate photosynthetic pigments. Below is a diagram showing the separation of pigmentsv6, hxlm9p/fy0m+wdf 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 the6v a89 ohbgia*z* .civ 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 photosynthepnk6/.jnsn (a sis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-cata-fs(y8p x9bxr1s3 ijxlysed 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 usbw/bg d 6 n8cp36-m:cn14rn -lql eenaed 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 encb l en:cd-np1/wbg6 4r8nq6l n-3aemrichment experiments?

  In algae, what is the role of carbon dioxide- w;av6rp .kl88guz ir in photosystem II, and what form is it fo;r. gvalpr -88 w6kizuund in?

  What were the results obtained from the lollipop experiment that enhq0i3h1/d;5 )sp-vzgrg4*h h r ;g/tpqyagob abled Calvin to determine the order oor q31d4h50g-h;qi b a*/ghrg stg;vz/p)ph yf the light-independent reactions of photosynthesis?