Which term describes the splitting of water mog584zvs fz:xk2g e q,hlecules in the presence of light to produce electr :542zx8zg,svqfe kg hons, hydrogen ions and oxygen molecules?

  Which of the following is involved in carbon fiw 8rb -j6l sshx4ku0.wxation during photosynthesis?

  The diagram below shows an experiment investigating the effect of tem51jt7l vsyc r)gmj49w r/w c(wperature on the rate of photosynthesis. Which of the following is not a method of keeping a controlled variable at a constant value throughout this particularvws(957gcjy r l) wwj tcr1m/4 experiment?

  What does X represent? 1ugg h4d;xoumqtc.9 9

  The Hill reaction shows electron tr3 l2t:dg0bb4cy t,bvbo.k4x wansfer 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 electron accept4b bb 0c3 v xob4ktly:t.2gwd,or in photosynthesis?

  The micrograph below showo8vuqug:sd2hjczh, y.5mu; 6s part of a chloroplast in a leaf.Which of the following structures are found in the part of a chlorcd,h.5qu2 z u;hvgu8: 6sm joyoplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at different t94s2e hnxza0vs2x :w,qwum : demperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate of photosy vqnina(.;:0 s,b vpmtnthesis.

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

  The following processes occu5nr,,- xk1ohfl a5o + tn3zfqthqzy7n/ 7as2xr 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 shohum z32yt-0dzio) 5agws where chemiosmosis takes place in photosyntya ugt o 5zh-0m2di3)zhesis and aerobic cell respiration?

Coleus blumei is an attractive 0rp;*p3 fqvl6ri 7o u:iluk8h houseplant 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 liddzr ,fufh9 nhz;:5nr8 ( mft/+p d.dmght-dependent reactions for photosynt,nrfhfd5ddz. 9f+dzp h;r: mn(/8 mu thesis?

  Which of the following p6goon5 b c4 dkl59c mg:u78y 6aed3kacorrectly 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-in9i5eql k v:md,1m4z mrdependent reaction of photosynt5zm9mveik qrm4 d:, 1lhesis?

  Which structure of the chloroplast is most involvedin nban:778pg4 .xpz ihvcna4 x .0r-u in the production of reducedpp.:a xinun a4ih8z074 n nr bxgvc-.7 NADP and ATP?

The diagram shows the separation of photosynthetic pigmehk.uc,lv u/qmme k* 6bv58b /ents using the thin-layer chromatography (TLC) technique in the solvent mv5 hluc.qv 6,/um8eb*k/e kbpropanone.

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 clig4gy j6o6.aaegm6l1i)x r)au mate change on the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containing a 6e1a) gm 6.uggoxa ry)lj6ia 4solution 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 ranrq(-k jehwt7i*fx : yy+*nqu( ge of wavelengths of light that are absorbed and ej: f-iy rkqu hy*7+*(w(nxtqreflected by chlorophyll for photosynthesis?

Photosynthesis is a process wher;.vrh 6z,u;b7unf y n*;+zyzdihpf(pe carbon compounds are produced in the presence hu zhvnybn;f7zf+y,;irp.; 6 up(*zdof 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 thylakoiv d.aoh .uz0ito;4*/qm am2nd d membrane in the light-dependent zqm aa;v*ud.0oti d.oh/n m24reactions of photosynthesis?

  What is the process that takes place before e977c ojdnw z:nxcited electrons are transferred from photosystem II t n:n77 odczw9jo photosystem I?

  In which structure of the chloroplast qpsb-tx +.6zz4(bmqwz h15y jq0qu /ndoes ribulose bisphosphate undergo carboxylation/thnb.5q(u 40 -wmzz +sxqq 6qbp1j zy?

  Which products are formed at the end of the light-dependent and 0bz/:5qslc 7 eywmj q-light-independent reaclc:zm 5 qse-/ 0qjbw7ytions?

  Thin-layer chromatography can be used to separate photosynzywc srt2 yqv(pdfth.;t1;/w 0 u6vx.thetic pigments. Below is a diagram showing the separation of pigments in this way. Rf values are used to work out what pigments are pr wv;zt/twtd y. y0 f6hqvspx(c1r2u.;esent 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 ultrastructasa c.q 5*x3ugo.k6aa/;jhx )6b gxbuure 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 spectruh 9rwowl/)r3 am for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-catalysedjpz.fm tv/n90qq )5ob 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 to predict future rates of photos jdvvy. 1qjag6ippm8w.q3/m2b. 2 r ltynthesis and plant growth. Whic l6.adpv/yrwqj 3 .1t 8mm2vp.j2iqbgh 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 photosystepy7a:/d laf;gu7 ay 5dm II, and what form is it foua:apy7 5;ay7/fuddl gnd in?

  What were the results obtained fromg dw f0j8r0qj1uljm,6 the lollipop experiment that enabled Calvin to determine the order of the light-independent reactions of photos w10lj6gr jd m,qfu0j8ynthesis?