Which term describes the splitting of water molecules in the presence of u29ik8s2 pqt6za 3,jy q1frq hlight to produce electrons, hydrogen ions and oj yqiz2a ,s8uh1kq2t qp693 rfxygen molecules?

  Which of the following is involved in carbon fixation during photosynthesim3dm8 ldg1l;ws?

  The diagram below shows an experiment investigating the effect of temperatqg f6(tn-b6nj ure on the rate of photosynthesis. Which of the following is not a method o nnbjt q(fg6-6f keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represent?7l;)y)lwm x k/0ez ofc

  The Hill reaction shows electron transfer in isolated ch7d k ei.rgbvop) (e(v8loroplasts 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 acceptor in photgkre7v( .d8e (ovi)pb osynthesis?

  The micrograph below shows part of a chloroplast in a leafc13.j feof ttb *onblq*(0( sj.Which of the following structures are found in the part of a chloroplasbjo(ff.e*1 (jt 0sqtc3 lon *bt labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate ofd . :tpgahd:6j p6hj1f photosynthesis at different temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate o(k v *frvq3)fyg cd,g yx,+;bzf photosynthesis.

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

  The following processes occur ktrrx(m6xi . zc4(ty 1in 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 picv pv:j,r8b;jj3 ou/w*cv s 7hotosynthesis and ae 7/cco:v;jr p8jbwv3* js, ivurobic cell respiration?

Coleus blumei is an attractive house:b2o; grk tne9plant 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 reacg.inczr/ tb))6 j i*wktions for photosynthesis6i)r) b.gtj/*zki nw c?

  Which of the following correctly descrhq( i1tfujc5pu2 d*k 1ibes 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 .)ze/o +h;nop s0vwgc this light-independent reaction of photosynthvzeh;os n)w +/og.0cpesis?

  Which structure of the chloroplast is most involved in the production of redu5ek yf:jl0c; /izj -tyced NADP and /-5: t;kyyj0jfelzciATP?

The diagram shows the separation of photosynthetic pigms kvf b(,svio2m++dr:ents using the thin-layer chromato+v+fmsk(io,d2rvb s: graphy (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 change on the x0h8l)z) p r5dnlwl1c rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containing a solution of water and carbonic ac)hcl dl 8pz510wr)lx nid.

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 o.uu82thk sx jb 9) 2olcel,a/if light that are absorbed and reflected by chlorophyll for photosyntxoucak82 ljhe t) /b9iul ,.s2hesis?

Photosynthesis is a proc3 xwvi9z.m0ffta07;julj *g h ess where carbon compounds are produced in the presence of light. jmi*v w79uj0fz;0ltg .a3 hfx
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 across1 87l i5ci3/z/kvfxeuh4pksh the thylakoid membrane in the c7/51ei hiu 83 zhskplk /4vxflight-dependent reactions of photosynthesis?

  What is the process tho*tt7i* ix5e bat takes place before excited electrons are transferred from photosystem II to phox o tet7**5biitosystem I?

  In which structure of thtq., pkx e5ow8 s:k3tre chloroplast does ribulose bisphosphate undergo carboxylation?es5 r .o3,xq8wtkpt:k

  Which products are formed at the end of the ligh9r 88lzm0ks vgt-dependent and light-independent reactiorzkg98lv s8 m0ns?

  Thin-layer chromatography jd 8.(t mhr8gvcan be used to separate photosynthetic pigments. Below is a diagram showing the separation of pigments in this way. Rf values are used hj8rt8m g.( dvto 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 a chloroplas;t. a m79jy 0jmhvzyakv04t i5t.

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 spextxy :rl*hy 2ih0 7-nectrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-cata+laxb x4q kou ;nt z204gwo1xr,2t p)xlysed 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 rate8ck z9g*(3qcf w3b dxxs 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 enrichment experic(3 93dwfc zkqx*bg8x ments?

  In algae, what is the role of carbon dioxide in photosystem II, and what form i1x6udwb.9: w w i z(yylptu6v5s it wy(.u6:y i6vx bp1tdluwz5 w 9found in?

  What were the results obtained from the lollipop experiment that enabled Czehnd 3g9 k4u,+pkzl .alvin to determine the order of the light-independent reactions of photosynthesik ,dz9ezg34hkp.+ nuls?