Which term describes the splitting of water molecules in the presence of lig))ev0pm5qsfg u z6c i3ht to produce electrons,gq3 pc)5zi vefs 06mu) hydrogen ions and oxygen molecules?

  Which of the following is involved in carbon fixation durx;2. jpn+o drjing photosynthesis?

  The diagram below shows an experiment investigating the effect of tecg:j ;r2. czv:eip3hx mperature on the rate of photosynthesis. Which of the following is not 3x . r zec:vg:jh2;cpia method of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represensz7po l 1p-p6st?

  The Hill reaction shows electron transfer in isolated chlorih5zqht ( 58ku.+r rjya)ov 2joplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is uu2jkhqor)ay8r(i vjt 55+ .hzsed 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.Which of the follow2 zuqr;w.r l2s0 naj.wing structures are found in the part of a chloroplast lulw.qr s0 n wzj2;ar.2abelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesisnif0ndy1:+mz,z-ou 7: d y wfw at different temperatures.

What conclusion can be made?

  The graph shows the effect of light inteniny 5f/mh9vp )n(s:kba a)ix-sity on the rate of photosynthesis.

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

  The following processes occur in the Calvcz:,rx:+txkz0 w rw8th 26 utyin 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 php zcq(vqh52 gxwcbwazbcsu226y- 1;.otosynthesis vx2 52pcb;yhz61z.q a-g(cqsb2w wcu and aerobic cell respiration?

Coleus blumei is an attv*j39gc 6owvrractive 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 ha(big6 7 xz9huydrogen ions in the light-dependent reactions for photos(g79bi xau zh6ynthesis?

  Which of the following corrects:bq;0q n.p z7 ni;l+ny 6knswly describes 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 reaov3szlnfj1wn cap(0 ,/) bjd5ction of photosyna( j5npdsfwz)n v j,lo3c 1b/0thesis?

  Which structure of the chloroplast a h5uo3 anr8s(0vqj0 xis most involved in the production of reduced 0 v uhoqa0 snxarj85(3NADP and ATP?

The diagram shows the separation of photosynthetic pigments using+: j3qgb m4p5faq ls0j the thin-layer chromatoglbf3+5m0 gq4qa:s j pjraphy (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 4 q)m gzwa57o b8/1qzea.fhpgchange on the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, z. 7afpe 48h a1)b/qm w5ggzqoeach 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 wavelengthb;dke4 3 3s2mdrgmpw, yw7o 0ss of light that are absorbed and reflected by chlorophyll for photosymkw 7seg4drm pybs,;0 w23 do3nthesis?

Photosynthesis is a process where carbon compounds are produced in the presenc ak;z1rmahub w66rm 1.e of li6az bw1;kauhr.r1mm 6ght.
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 pr, ) obfudgexi5m.hq- n* 5i/ mlzah+w+oton gradient across the thylakoid membrane in the light-depende) wn.ul, 5 mb hiodg+/*eqz x+m5-hifant reactions of photosynthesis?

  What is the process that takes place before excited electrons are tr409;n prw sqkfansferred from pho pfwnk;0sr9 4qtosystem II to photosystem I?

  In which structure of the chloroplast does ribulose bisphosphate undergo cd4 hb9blnp2v. 7*f vpparboxylation9ppvb *lh d.p7fv4b2n?

  Which products are formed at the end of the light r8:ry tf::rwhk 6u.xbuu*c,o-dependent and light-independent rea6.* :wk:curbt:8yf rxuu ohr, ctions?

  Thin-layer chromatography can be used to sepa, : r/khclpyb+rate photosynthetic pigments. Below is a diagram showing the separation of pigments in this way. Rf vac, rpkby/ :+lhlues 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 ultrastructure of a chloroplast. z k7j.x*efbc84hp5mz

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 phmb-*r ec/ h.zfotosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular bob 9jg7ln 8c swgtl:./gs7ngu849fk6tx*i rrespiration are 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 enrichm )u ruy7tht 7x/n,lb*cent experiments are used to 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 conductinbt)hu, xu/*t7yn lc r7g carbon dioxide enrichment experiments?

  In algae, what is the role of carbon dioxide in photosystem II, andd3ksv)-e55 gf5a) nuw d9 g 2apme0ebg what form is it 5ed g -pg)535av)a2 sufw0edmb g9k enfound in?

  What were the results obtained from the lollipop experiu5 ybbcu4p5ni, xme9 +ment that enabled Calvin to 4+ e5,ybu5mn xcupbi 9determine the order of the light-independent reactions of photosynthesis?