Which term describes the7im6 yfq0s/kx 3taws; splitting of water molecules in the presence of light to produce electrons, hydrogen ions and oxygensw7tk/i ;maxq3 06yfs molecules?

  Which of the following is involved in carbon fixation duri j(mg 2cg8rv0sng photosynthesis?

  The diagram below shows an experimenv8i hjf4 +e28bayfyu7t investigating the effect of temperature on the rate of photosynthesis. Which of the following is not a method of keeping a controlled variabl jyv+uyhf8a478 ieb 2fe at a constant value throughout this particular experiment?

  What does X represent?ncw8a**nvbsnqv zf.+ qt 2/ 0v

  The Hill reaction shows electron transfer in e-+ro7 tr*x hqgn6:liem ut .+isolated chloroplasts for the light-dependent r : -ot + nerhr6+.7tmgxul*eiqeactions 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 photosynthesis?

  The micrograph below shows part of a chloroplast in a leaf.Whion- 3jv u(p.1fy3fp5bt6llhg:o 8 ,w qsw:fbqch of the following structurbf:q 5 ( jp6ws:8ulhwnp,bf-f.1t qvo 3goy3les are found in the part of a chloroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at 1ib.8g vh-fngk(f*lqk*q;o *pa z e9v different temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on ..qs +ub-5 ybg dt6dubthe rate of photosynthesis.

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

  The following processes occur in the Calvin2erp ;/3ce (o c oo;mllsw,bl1drc.c- 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 ((t y)391in)k zcb otpic1w eletbp2 *shows where chemiosmosis takes place in photosync t*1 ecztbt1)kb3 nl(ii)9(2e p ywopthesis and aerobic cell respiration?

Coleus blumei is an attractive4vs vox/i 9m6e x4ivi7 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 hydrozu4vty)6 vo3m3lp gyp2m- ek-gen ions in the light-dependent reactions for photosynthesiyp lvkzg)2oy3-m -tv4me36u ps?

  Which of the following correctly desc8shy,0 fzh0b8fqqa,ldo k;0 zribes 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-independent reaction of pdv*as(1(igr asztcv8 9b:in ( hotosynthesis *: 9(avsvt gsiznia(8dc1b r(?

  Which structure of thg9u0yscwviw 1tz;dad nkq. ;2auy i+0/q 5;ece chloroplast is most involved in the production of reduced NADP an0 5e g; cadkq.ia+1iywcqu0nw;/s 9 y;ut2 vzdd ATP?

The diagram shows the sep a/.af*pgjz 0zaration of photosynthetic pigments using the thin-layer chromatography (TLC) technique in theza* /fpjg.za0 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 onzew; a eel 3m8tpq19i9 the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containing a solution ofewpltez ae;m938 i19q 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 lig*/5 ) etwsvd8x;erpybht that are absordrwxe* ;bt5yp vs/ )8ebed and reflected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compounds are produced in the present uehor9)(q5q ce of light. or)(tu 59qehq
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 thylak:)yg;kqtaa56ygi 8h bgc8mr1 oid membrane in the light-dependent reactions of photosynty81 r:a6g a5ym)bhiq g8;tc kghesis?

  What is the process that takes place jcd(e -*mavdsl ha(+h v)1/he before excited electrons are transferred from photosystem II to photosystevseha*(d / majdehlc)+-v1(h m I?

  In which structure of the chloroplast does ribul3, xhv(i k7e+p zs6lz.8xzfenose bisphosphate undergo carboxylatizsxxkni6v +fe.z(78 ,eh3plzon?

  Which products are formed at the en mdmrw au9+7 x.2in.rpd of the light-dependent and light-independent reactions?rxi r7.+m.m9d upwa 2n

  Thin-layer chromatography can be used to separate photosynthet)1pn 3fi+r r.u:cfhugic pigments. Below is a diagram showing the separation ) ir.gh ucup +f1r:nf3of pigments 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 showshwz */su :5s,aejb ef,4er8ig the 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 photosyz aua80sarx723 ea 0vhnthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-catalysed fmw wxs2,kh( 5reactions.
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 oc+ sthcuj6r: 7f photosynthesis and plant growth. Which of the following is an advantage of enclosed greenhouse experisc7+t u6: hjrcments over free-air carbon dioxide experiments (FACE) experiments, when conducting carbon dioxide enrichment experiments?

  In algae, what is the role oaa t) 7fr xyoms .z1 7f,)fivijcj1u4*f carbon dioxide in photosystem II, and what form is it found74 7 )js,ri)af1c z1umiaf* toj.yfvx in?

  What were the results obtained ;b76 u tvdos829mm3rsldp 1vufrom the lollipop experiment that enabled Calvin to determine the ordr8ddp; 7t 9sub mu1sv l2v6o3mer of the light-independent reactions of photosynthesis?