Which term describes the splitting of wate5nkz)y smn w31xzxh8 a;g -(pjr molecules in the presence of light to produce electrons, hydrogen ions and oxygen mo;-)3z1snpxznxgja khym (58wlecules?

  Which of the following is involved in carbon fixation te, gxmccvl7lt4c ( 8v,0ut0 nduring photosynthesis?

  The diagram below shows an experiment investigating the effect of temperaturx xzq9;:d7k,b c5 rsfre on the rate of photosynthesis. Which of the fzx;7sq5r:r f ,9dckxb ollowing is not a method of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represenqyte.alpthdl76ac pn*1 .1twr +oc6 .t?

  The Hill reaction shows electrono4 au5 h*-iske transfer in isolated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophen4oeia-hks*5 uolindophenol) 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-f ds; l7gl4 gq2cs1os6xm7avd5oc 6 bu uo:y:.Which of the following structures a:71;vss5c-xfs mo:oldugbcyql g7d 4 o 2u66a re 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 diffedh+xap p 9 16 v+mbwwnx(*wjg(rent temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate of photosy.z ces:f9 bhone- c67anthesis.

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

  The following processes occur in the Calvint/.y. opde7vg2 i 5mj 2r(fqwb 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 che9w o1lswq2tik8w adpp h(4 3( mgki9z.miosmosis takes place in photosynthesis and aerobic cell respiw84m1k9 ( . 2q3w hiozk9pp(gsadl twiration?

Coleus blumei is an attractive houseplant with reewpl4 h tefm44;n2df)d 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 reactiono 28s lfo4et:du-vlm+s for photm+vtfslu2o oe:d l8-4osynthesis?

  Which of the following correctly describesw-hjy ,6k :kv8u vjcn8 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 lighf+/ki mi)ls)g t-independent reaction of photosyntf)ilmi+s g k)/hesis?

  Which structure of the chloroplast is most ink zv; +f 4yecw,)j:dmmvolved in the production of reduced NADP and ATP?my4+wkj c:,ve ;)dfm z

The diagram shows the separation of photosynthetic pig+;t- mohy y;iyments using the thin-layer chromatography (TLC) technique in the solvenyyomh;-;i +y tt 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 cha qg2p07+nm. hfu2cyf ange on the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containing a solution of water and carboni0272cghaf+ ny.p mquf c 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 correj// qbsstd2-sh /n+i oct range of wavelengths of light that are absorbed and reflected by chlorophyll for p/osht ssn/+j -i q2d/bhotosynthesis?

Photosynthesis is a process where carbon compounzji/k l 3 :v:ijge/5mlds are produced in the presence iv:ekgm/ :3/ ij5ljzlof 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 pruc.w1.+h hx(nlv66z 5pr1df er ucy3coton gradient across the thylakoid membrane in the light-de 61 61 e .cu.unpx5cy+crl(wh3d hfzvrpendent reactions of photosynthesis?

  What is the process that takes idhpbabx 0/ gd(hv+s n15s3+ zplace before excited electrons are transferred from photosystem IIsda(pb1+5i dhbv s/0zhn3 gx+ to photosystem I?

  In which structure of the chloroplast does ribulose bisphos-n7d; yhewyivvscs 5 a38 ze74phate undergo carboxylation?3-y vi75e a; ses8w47cznydvh

  Which products are formed at the end of the light-depen i8ef,p4,-n ( owobhiydent and light-independent reactbwo ypoh48fe (, ,n-iiions?

  Thin-layer chromatography can be used to separate photosynthetic pig1.fyp rf8vivc4i4 oe ,i): jmxments. Below is a diagram showing the separation of pio:4e 4ymixj,) p8.icifvr1 fvgments 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 ultrastrucjslh; 58 (thshture 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 photo69c0b- xg4y ycwa4 lrasynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration aret5bc1 fa (dx). e,nvub 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 toyig uo h/3 2:;cikmw5tl42dt6pa ee: g predict future rates 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 carbat:ikw:yt/ l g e6d5 c2go;3hmup24eion dioxide enrichment experiments?

  In algae, what is the role of carbon dioxide in pho+ qe+lm5dbd:qo-tb8c tosystem II, and what form is it found i-5ld:dcbo mt+ 8q +bqen?

  What were the results obtained from the lollipop experiment that enabled Calvs+4rr,b3bildu /7 vte ixe7 /fin to determine the od vbi ue34 /,li77/fetrs+rbx rder of the light-independent reactions of photosynthesis?