Which term describes the splitting of water moleculesftq y )qx bk-v;kmlj)kd5;2v/ in the presence of light to produce elec5;;q )bf /jvq)d vy2 -ktmklkxtrons, hydrogen ions and oxygen molecules?

  Which of the following is involved in carbon fix cupf+as+4cio3y)w2 k 7, zmcxation during photosynthesis?

  The diagram below shows an experju.) dxqi40n; tlmi w/iment investigating the effect of temperature on the rate of photosynthesis. Which of the following is not a method of keeping a controlled variable at a cons;ui)qj4 tdwxi0 nlm./ tant value throughout this particular experiment?

  What does X representzu,6qpw: f+sr?

  The Hill reaction shows electron transfer in isolated chloroplasts for the l ad6en.)pr.ek gj*83s suu8f h:fvpw (ight-dependent reactions of photosynthesis. A blue deuw *.g k6af rj e3svp)8(sn.h: 8udpfye, 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 chloroplastaa;jc0s771b y w u-eik in a leaf.Which of the following structures are i07suy a7 j1;ckeba w-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 different temper y:j/.+5ia9 ,gx(zp6 t 8eelogvttwgtatures.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate of phoye r6 fhf.r7 a(;6h7ibbx wm7atosynthesis.

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

  The following processes occur in the Calvin 3hu8.dq1ne,lj ,r g 3ajn* rpgcycle.
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 chemiome+qe tm r fuzdat4v-a465u75smosis takes place in photosynthesis a5 v+ezm764tmu-fe45tad qurand aerobic cell respiration?

Coleus blumei is an attractive houseplant with red leaves.o dx:w/ eki(dpf:s4fw 7qo-)g

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 reactions for:m8 shw blsd:: photosynw::hsds 8 bm:lthesis?

  Which of the following correctly describes photosynthesis or respiration? bngy30k) oweel6+9w m

	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 ospsum*oqgr)ymdo. 1r91vw0 h9 ) dap;f photosynthesis9)* ro gsr 0syv.)9mmudah1wo 1qpdp; ?

  Which structure of the chloroplast is most involved in the production of reduceng5o(d)k qz6o72v*xlz j o)d kd NA7 kjn2l(o 5okz)z dv6)xd*qogDP and ATP?

The diagram shows the separation of photosynthetic pigments using th n2qh9o1af0oke thin-layer chromatog aqhk09 2ofo1nraphy (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 ch-vf(g 4esj +,d3 gukklimate change on the rate of photosynthesis, pondweed was+ ks(,j fgkvg3 hd4-ue placed in a number of sealed 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 the correct range of wavelengths of(f(tk eb8)dpe 1itzy- light that are absorbed and r k(pzi8ef(deybt)t-1 eflected by chlorophyll for photosynthesis?

Photosynthesis is a process whewc 1u8f3mn g3ere carbon compounds are produced in the presence of lgefcm813 u3nw ight.
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 protora,:lrztwg9 w5t o5 8ad l:v )vnw5/wkn gradient across the thylakoid membrane in the light-dependent reactions of phoz:wag/:w 9v5nl5wl,ok8 wrtravd) 5 ttosynthesis?

  What is the process that takes place before excited electrons are 1 4ik pm9px.sobuaf47 transferred from photosystem II to phou4akmpi.ofxp 19s4 b7 tosystem I?

  In which structure of the ch; ayihjza ,9q:-*ikzgloroplast does ribulose bisphosphate undergo carboxylatazz y :gah,9-ji*k;iqion?

  Which products are formed ezy;q (/q2kfo yat4j+at the end of the light-dependent and light-independent reactions? y a2j/k;(tzqqy4 e+of

  Thin-layer chromatography can be used to separate photosynx/sibg.hn;bx a 4u1s1thetic pigments. Below is a diagram show;ha /41sxub sin.bg1xing the separation of 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 shows the uizhbd7:oy: p:w25 x xpoz2rb0 ltrastructure 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 :u +qqyr4,neospectrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration ar 24eb dk zt4rnbu29k(ce 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 to predic thy9 un.p ng-ulu3zt w7;k3q -lt8-dnt future rates of photosynthesis and plant growth. Which of the following is an advantage of enclosed greenhouse experi d7puk3-nuqtl-9w3 tlnh8;. zytgun- ments 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 for6wkd5zaxw-u* m is it found inwdz6ux - w5ak*?

  What were the results obtained from the lollipop experiment that enabled Calvdt;r.n 3n 1i;j ikowm(in to determine the order of the3kr1wi .tmndon(;j i; light-independent reactions of photosynthesis?