Which term describes the splia un70gvs+pd afpq/suw 0. ) ov384bkitting of water molecules in the presence of light to produce electrons, hydrogen ions and oxygen molecu.av) ak w3u u+008nfqi s/opvpg4dsb7les?

  Which of the following is involved in carbon fixation during photosynthesis? akl59 /nlte99qf s4ec

  The diagram below shows an experiment investigating the ezr v-c lsg1qi93csh ;.ffect of temperature on the rate of photosynthesis. Which of the following is not9rcs3iv lh1 qsgc-.;z a method of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represena3y*kt)t8fk e t?

  The Hill reaction shows electron transfer in isolated chloroplas k:x1 nki1,vpcmj6cl0ts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of the natural fink0,i1 mk:lc1n6pc vj xal electron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below shows part of a chlorop 6euwo h 8s42a(s+caoxlast in a leaf.Which of the following structures are found in the part of a chloroplast lac xsuw oh oae+28(64sabelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at different tempedchj9 *qyha 65iid/3 dratures.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate o hw :vfsbgo7hgtd-hg *ot +nv8 b+e /rq8e.,;af photosynthesis.

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

  The following processes ees6i ilb:x)mm*jt2c 8 -ni0roccur 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 correctl n z9f pmx2tkj2gw(/74eojh*hy shows where chemiosmosis takes place in photosynthesis and aerobj922*e kjh p/n4z(7xf thgmowic cell respiration?

Coleus blumei is an attractive houseplant 04nbcw s(tis: ef8n/fiajl(h) /c b w4with 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 reactiob 58u1a/zvvk rns for photosynthe r /5avzvb18kusis?

  Which of the following correctly describes photosynthesis or respirul3 xgobl,t8(ik(cc7 ation?

	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 occurrilr.b*q zhkq09h uk+c7p5suw1 ng in this light-independent reaction of photosyn7bq + h9suplc 05wzukrhq.1k*thesis?

  Which structure of te, pum8xyv(3+ie+wa phe chloroplast is most involved in the production of reduced e+i+v,u w8(ae3pp ymx NADP and ATP?

The diagram shows the separation of photosynthetic pigments using u-q 1qc67no3s t5e1fdotws:qthe thin-layer chromatography (TLC) technique in the solvent propanon3dcq7:nqo-11t ot ewqf5s s u6e.

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 climate change on the rate of photo- ko9gbj+krt48ag*al synthesis, pondweed was placed in a number of sk+ar*8t-jgba ol 4k 9gealed 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 th i/ jtw lhaxda7 nd:72,mcnw(.it8h6ze correct range of wavelengths of light that are absorbed and reflected by chloroi:2wl6c a/ hmtj7 ina, .7dx8ndht(z wphyll for photosynthesis?

Photosynthesis is a process where carbon compounds are produc hoznm74r1 r0rga9+.atc3 e 9qowux x3ed in the presence of liga 94tr1ecarn.m+xr ux 3 hgq0o o9z7w3ht.
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 g+f xa)r2 ltfw.g. )icxo qh7x(radient across the thylakoid membrane in the light-dependent f rx)lc27w o q)(a txg.hxi.f+reactions of photosynthesis?

  What is the process that takput3 g* 9jwsf7m,4i stes place before excited electrons are transferred from photw,7gutsmp *f49 s ijt3osystem II to photosystem I?

  In which structure of the chloroplast does ribulose bisphosphate undergo car 9ycg8q+(xgt o7n j;lk1o5y dnboxylation+(jtd1x7kn ;n9cg yq8g5 oylo ?

  Which products are fohw jnxumy (fm7 632x:zoad8l0rmed at the end of the light-dependent and light-independent reactix zm wx(3 fad6 m87jlh2no:y0uons?

  Thin-layer chromatography can be used to separate photosynth 2novy+fzzezihr2h0i0 +u)3tetic pigments. Below is a diagram showing the separation of pigments in this way. Rf values av+ e y)fu2ri0 hzhiont +z30z2re 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 ultrastructure of;ay c nm7( ;af0h9zwnw 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 photo1ua*t s(d j rjqsdu*5q8q8z/ nsynthesis.

What can be directly inferred from the graph?

Photosynthesis and cell kg1i-q ;mj,puular respiration 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 t5g:9)yowfzcu /qwf vo4t. ub.o predict future rates of photosynthesis and plant growth. Which of the following is an advantage ou:b 45wt.vg/fwooq. f9)z uycf 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, atz*g/2f rsz :fnd what form is it found 2* gz/zsfrt:fin?

  What were the results obtained from the lollipop experim 0 ,tzlf ogzab fmxr)3,8yt+z)ent that enabled Calvin to determine the order ot mf,zlz,z tx)fgb3 r) 08y+oaf the light-independent reactions of photosynthesis?