Which term describes the splitting o(ght1ijwq 5b q1n jp6l6+,mrx f water molecules in the presence of light to produce electrons, hydrogen ions and oljq wq m+1 ,t r(n5h1i66bxgjpxygen molecules?

  Which of the following is involved in carbon fixation during photosynthe38kps ncd ujllqs.(-;sis?

  The diagram below shows an exp*mgz n:g /rwoh yo;8x+eriment 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 constant value throughout : m +onrhzwo*g /y8gx;this particular experiment?

  What does X represen:nr6wlj s/)8pkqd l3p t?

  The Hill reaction shows electron transfer inm1za)(jh5xe s3 ez uz2qp(g6c isolated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of ap)z ques6 hm(15cx(zgz je23the natural final electron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below shows part o-: 9/mmfiu6 zddhb5:sogafd )f a chloroplast in a leaf.Which of the following structures are found in the part of a chlo:- 9foi:6 dm5b/ dmfdhz gau)sroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of rl1a+iqyypz t hs)109,xcd, rphotosynthesis at different temperatures.

What conclusion can be made?

  The graph shows the ev k7)jj j;wz5l5idg +sffect of light intensity on the rate of photosynthesis.

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

  The following processes occur in the Calvin cy;k+(1z3t) /-+wj shlr typisf mtl)dpcle.
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 photosa-yn bw :ygi*ks5 t.(fynthesis and aerobic s(ygan kby.t:*w5 -fi cell respiration?

Coleus blumei is an attractive houseplloem7t42 kr t.ant 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 reactio(3at2+ xli lhfdprpt( 6rlwo() 2 w+lkns for photosynthesii(khr 3l2w(wt fpa+xlr2ot l)+6lp (ds?

  Which of the following correctly describes photosynthesis oms1c/sk ohcr 1/z* 0etr 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 o+tv(t7 ouat8n uoqb ./ccurring in this light-independent reaction of photosynthesisn a. u+8ob /(qtv7tuot?

  Which structure of the chloroplast is most in7 :k0j3csd3n20xy tqalrhz8t 85 e mm9ebp+a xvolved in the production of reduced NADP andm 8eej 7chrla t983p20qx+azn0: s5dbtk mx3y ATP?

The diagram shows the separation of photosy 3ck88/zeulq8 t13m5gp bwq mxnthetic pigments using the thin-layer chromatoxqp t lb185ez3q 8mmk8g/3wucgraphy (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 imp vst :.nh;u+gkacts of climate change on the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, n;ukt+g vs:h.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 rangerlrcfs)kc o p6m /)4d7 of wavelengths of light that arem6scr)/r4d cp 7ofkl) absorbed and reflected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compounds are produced in the presenc3brr+1fi cq 6ue ou1iqrfbr3+6 c f 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 pro:v ; :edxg/ wmzs.byj*ton gradient across the thylakoid membrane in the light-dependent reactions of ph;d v jm:b:.* se/gyzxwotosynthesis?

  What is the process that takes place before excited electrons are trajup(f ya ;9/gjnsferred from photosystem II to photosystem Ijuap9jy/(g;f ?

  In which structure of the chloroplast does ribulosezo d9 ppjp55j0jc0l7e bisphosphate undergo carboxydc p p05p9ejzj75loj0 lation?

  Which products are forp q k1bnk40;ndw jmin1u682pmmed at the end of the light-dependent and light-independent reactions?k2dn1m qw nj1mnkuppb6i4 8 ;0

  Thin-layer chromatography can be used to separate photosynthetic pigments. Bc+ .nqods/5f2/s qytyelow is a diagram showing the sepa2n.yq+5oy sf/dqc/ tsration 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 ulr. j cet19 q r;3:6h8;pw+ flwpznyewltrastructure 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 photos t/*vbt6gf0ym ynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzc47 g8 p fs1f0x9bam o1e fpj:vx.c6n gdo3/vyyme-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 predict future pq2wj9kv ;wt23xy,pz rates of photosynthesis and plant growth. Whic;2,jq zxy3w9pkp2 v twh of the following is an advantage of enclosed greenhouse experiments 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 k)mnn;8 lz6sl7 wugo3II, and what form is it n;lm6u)zslkno 73w8 gfound in?

  What were the results obtained from the lollipop experiment that enabled Calvin cj2n yph9r 7 51mcfar4to determine the order of thc f 9yncr4a712hmpj r5e light-independent reactions of photosynthesis?