Which term describes the splitting of water molecules in the presence of ligh;v pg.lof 26pdt to produce electrons, hydrogenpv2g6; l fpo.d ions and oxygen molecules?

  Which of the following is inv+hzdti5ix .h6 4y u3zxolved in carbon fixation during photosynthesis?

  The diagram below shows an experiment investigating the effeoz:rtq,djro c: i 8.9-vv1mfnct of temperature on the rate of photosynthesis. Which of the following is not a me: nd,orif.rv qcmt8o - 1:z9vjthod of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X representb ydm r 0p:lvo53so:1k?

  The Hill reaction shows electron transfer in isolated chloropg-0kn ndw-s 0klasts for the light-dependent reactions of photosynthesis. A blue dye, Dw0k0--d nksng CPIP (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 h29osb k +w1(5r+nw 6svk ihzea chloroplast in a leaf.Which of the following structures are fihe hvks1zwsw62b 9ro+nk5 (+ ound in the part of a chloroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis jwh4j6ez o: 7*3 zecfsat different temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate otyhe:op- ql51/fime + f photosynthesis.

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

  The following processes occur in th3tx8d.r)8tcl 9xy) krhcb 9fh e Calvin 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 followin89 g ) *nlk7mq6eitus/4zj tr (iegur6e.o *dvg correctly shows where chemiosmosis takes place in photosynthesi6l8/ u g.ied7t rgumteo4jzek* si(n*)96vrqs and aerobic cell respiration?

Coleus blumei is an attractive houseplant with red leaves.t xws d8s1,zp-

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 tkr -5zc:y .0gsc r8vuhydrogen ions in the light-dependent reactions for photz cc rt.rug-:y 0s5vk8osynthesis?

  Which of the following correctly describes photosynthesis or respi574j +s.;b r.0uhblko o gshbiration?

	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 1wq1osq7tf;f 2 n qz3 oe66u,o2:njfvts;r polight-independent reaction of photosynthe q f31;f wv:ontoq1tn2urp6f s2;,6qje7zoossis?

  Which structure of the chloroplast is most involved in the production o+07ktu 0tqvpfu6 nx4 cf reduced NADP an 7t nk qpcvu046u0xf+td ATP?

The diagram shows the separation of photosynthet 02q7e4 4n;uey)zgh ytan tb*dic pigments using the thin-layer chromatography (TLC) technique in the soun2gneqe )db; 4*ty7h t40ay zlvent 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 chmnde/)i 0(v6fd d)bv fzrc/0gange on the rate of photosynthesis, pondweenf ))rdf0vz/mdg ic 0(e/d6bvd was 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 :5 ;ex-cq(xmzof at;kcxppb)vg( q9,represents the correct range of wavelengths of light that are;5);kemxcq (9 t -px:vzp gfxa q(obc, absorbed and reflected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbony h2 vv3qz32ry compounds are produced in the presence ov yyh3q3 2vz2rf 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 proton gradient across the thylakoin 93)zkd).u loemg o0ocixa1)d membrane in the light-dependent )z9d10l no.eax g3u)oocm)k i reactions of photosynthesis?

  What is the process that takes place before excited electrons are transferrenewh,;q8f+l*:rrx(tp z v: mr tz3 l2nd from photosystem II to photosystem:rl r req t v3n zpwmlf(+n:t;,h8z2x* I?

  In which structure of the chloroplast does ribulose bis uz2g82dg7j w8ju 3qhrgv: ui;phosphate undergo carboxylationgrg788q :ju v 3juhgw2u izd;2?

  Which products are formed at the end of the lmpbv/,tz-7s z.ap,-a ki ipv* ight-dependent and light-independent reactzb /-,v m-a7pt z .k*iavppsi,ions?

  Thin-layer chromatograp)u.ewk oq 5300 byowz6pbe1u rg3gh:fhy can be used to separate photosynthetic pigments. Below is 0:1r3 oep fgwk.u wbgy3b65uho0e)qz a diagram showing 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 ultrastructure of a chloroplg :jz rxxne(+h5m /;tdast.

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 spectrej8mlsp b( .5vum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular rexmo7a9uz8q x ,spiration 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 enrichment experiments are used to predict future /36uz:gyjo qerates of photosynthesis and plant growth. Which of the following is an advantage of enclosed greenhouse experiments over free-air carbogo/ e3yq6u:z jn dioxide experiments (FACE) experiments, when conducting carbon dioxide enrichment experiments?

  In algae, what is the role of carbon dioxide in ..kr mq0 q6khophotosystem II, and what form is it found okm6kq0. hq.r in?

  What were the results l 0gby4ath-s (obtained from the lollipop experiment that enabled Calvin to determine the orde y(h lba-40gtsr of the light-independent reactions of photosynthesis?