Which term describes the sp0bz)3,sq0 ux3c oy bazlitting of water molecules in the presence of light to produce electrons, hydrogen ions q o033,y 0zcbb)sua zxand oxygen molecules?

  Which of the following is involved in carbon fixation during phot2sxe57jx6p),ezg .9bwxr 7ftlipo/w osynthesis?

  The diagram below shows an experiment investig;ec)i*zluwu ajh rz9t*66 x l*ating the effect of temperature on the rate of photosynthesis. Which of the following i)uza cehuilx*w*z ;66j9 tr l*s not a method of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X representfco7ha7(,u ts ?

  The Hill reaction shows electron transfer d( nv.azp 1(y-ppk -,p oea2soin isolated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is useyakpa,sdzv-( p-e.(o2n 1 p opd instead of the natural final electron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below shows pj-c w la3qp83 h60gwc01nabblart of a chloroplast in a leaf.Which of the following structures are fo w-0ag0lhl6bqcj3wn83 b1 pcaund in the part of a chloroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of 17fb abrqf ak o1)-n0hny4/gaphotosynthesis at different temperatures.

What conclusion can be made?

  The graph shows the effect of lig-n y6ltete+zpt.byp2s4 05bght intensity on the rate of photosynthesis.

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

  The following processes occur in the Calvin cycli9 v v/yb2./ikd 3zfio;3 .zazsk 4dbte.
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+7hkg .vw7gqez; +z-d ie 1 aci1ic(pp correctly shows where chemiosmosis takes place in photosynthesis and aerobic cel+kg c7+h gci i-;.(p7eweaz pdiv1 z1ql respiration?

Coleus blumei is an attractive housew19(qv a.qrf )ebsjp)plant 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 reactione : iwkw++ gfz951danps for photosyntin a1wkwfe p:g5+d+z9 hesis?

  Which of the following correctly describes photosynthesis or respiration? c0/dae*vp0tj

	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 rea*w z cd(gtlxtmu:ft)*dn6l6 7ction of photosy c* gu( wmxd6)tnf*t 67:ltdlznthesis?

  Which structure of the chloroplasto(f-b.y3hns2vl wjn-* e 5mlp is most involved in the production of reduced NADP and AT-5-wsmy lne* bjhv2 .(lofpn 3P?

The diagram shows the separation of photosynthetic pigments using the thin-layer5 zijy*ebs6np90d(n mt n19 xl chromatograph*(eip9n lnybn x1 56jsdm9 0zty (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 climate changezk lvji r67;c*8 9n5k pxe0uqzmsg- f5 on the rate of photosynthesis, pondweed was placed in a number of sealed conical qi;9p57m 8glur6zxc*sjfnkk-05 zv eflasks, 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 range of wavelengths of l k;y8evjy/y a qd6cz-r5w2:p xight that jd:a5 zc v r2k/ye6pq;yxyw8- are absorbed and reflected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compounds are produced in the presq :ljty 2z l7)2+rgbkwg4c4g bence of liq:2ljl g74yb r+gw czb2)gtk 4ght.
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 thylakoid e)my:sbf19j+g.byin 5rr: gi membrane in the light-dependentr:)f:is e95n. jb1yi rbmggy+ reactions of photosynthesis?

  What is the process that takh-xdt. (xc * ob-qt7(hrxyue7 es place before excited electrons are transferred from photosystem II to photosyster t7*xe(--x .xctoq7hh(yubdm I?

  In which structure of the chloroplast does ribulose bisphosphate undergo carbo,jj)5xtbp.6cf gvv.7adb 7 w sxylation?.,pvj f d v 5swatb)6b7cxg.7j

  Which products are formed at the end of the lio.92owjxq*i 7wa. yxc ght-dependent and light-independent reactions?w xqo.ca9 * oyw27.xji

  Thin-layer chromatography can be used to separate photosynthetiba:w4 yc (yfb)c pigments. Below is a diagram showing the separation of pigments :)4(fb aycwby 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 ultrn-ei- k9 9u vl0qe7mvnulzl;p1xd 4r *astructure 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 spe)arwg5qrfs 8+,w 9kvl ctrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-catalysed reaue7/xzp1ylo w 98qa1qctions.
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 +tyrlw 5p:9 zq8ged/lof photosynthesis and plant growth. Which of the followingl8t+9/: lwd y zgq5erp 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 what form is ./c gb5j)csgc it foujg s cg/.)b5ccnd in?

  What were the results obtained from the lollip j-h3 or*m;g:+xzqr bvop experiment that enabled Calvin to determine the order of the light-independent reactions of photosynthesiso;qb rgvjxh+z* 3 -rm:?