Which term describes the splitting of water molecules in the presence 9,ne 3, z 4jrv9wrotbxof light to produce electrons, hydrogen ions and oxygen molecules?z etrjo,n4w9 v9 b,3xr

  Which of the following d5v;pk 7zw f1,awg p6eis involved in carbon fixation during photosynthesis?

  The diagram below shows an experiment ;ru *tqh0k9xzi6 i1x:o t ;kijinvestigating 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 tixojuz*qk:h xt;ri 9kt 0;61ihroughout this particular experiment?

  What does X represent? ;zmrtpg.z; sz7 rr1+ x

  The Hill reaction shows eleaj9:3ojgb/u ptgh 1. vctron transfer in isolated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of the natural final elec3gvtao9 :.b j p/ju1hgtron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below shows part of a chqo4 nccuie26c.kexykj5 lv )l1te0z/f 0*h1ploroplast in a leaf.Which of the following struj1lc n0 e 2x6eq. evhukkf)l0oz1tc45cyp*/ictures are 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 temcp3k, xbve -4d 33:pej8lpdvlperatures.

What conclusion can be made?

  The graph shows the effect of hl4p4jamlr9v9 gv.2i z 7;xaplight intensity on the rate of photosynthesis.

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

  The following processe c7oznjo :+zq+(bh:d rs occur in the 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 following correctly shows where chemiosmor+ ;o .*fuv nmpu0d3s0agkpnp3 x-/u zsis takes place in photosynthesis and aeu*zgf0ppv k3 nu0np/.rm; s-od ux3a +robic cell respiration?

Coleus blumei is an attractive oa fw,;pf:ykzct: 6*e4 h:lyphouseplant 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 reaoe2ba 8blxcl*) y3.vl ctions for photo3vbclx)e olb.a *ly28 synthesis?

  Which of the following correctly describes photosynthesis or respirati0n9sbbaf jdn 3l.29ghon?

	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 oco8f5z1qi 5w1 -)bki ,szzp dgzcurring in this light-independent reaction of photosynthesis? io i)kz8,fb-z5q z1wz5 pd sg1

  Which structure of the chloroplast is most involvemgx i3bes-c ck9w w)vo3+; /xed in the production of reduced NAD ev9e)i/3wws-k gc; bxc+omx3P and ATP?

The diagram shows the separ;,y .j op3f, 1twju.m0hjensqation of photosynthetic pigments using the thin-layer chromatography (TLC) technique in tht jhnpefso10m,q. .u,jwyj 3 ;e 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 change o a s+cb.m4cg nvc4-6m9go;u pmn the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containucs+4;.v nm4-gcpc9 6 gm aobming 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 wavelengthv 4,vyoigwv1kjyisk o 2*--3rs of light that are absorbed and reflo3j2 vk1o,4svir -viyywgk*- ected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compound)bu0n;oijv 1b*8qttq/px ,t zs are produced in the presence of li 8p/*t1 ji, 0oqtvb)nqtu ;zbxght.
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 wk0t7z7yi lich5 x07ga proton gradient across the thylakoid membrane in the lig7 zw7h5ti 00 cyigkxl7ht-dependent reactions of photosynthesis?

  What is the process that t1 bpf +vmvs4q23c he*gakes place before excited electrons are transferred from phot+fce2 v3m*hpq b1svg4 osystem II to photosystem I?

  In which structure of thl8jx qs+ll+id-/3bil e chloroplast does ribulose bisphosphate undergo carboxyl3dqljsi-ll + x/l8ib +ation?

  Which products are formed at the end of the light-duergtth i9ow n*(;3bb 9+g ez*ependent and light-independen*;9tei( gz+u3t9 *nwgerb boht reactions?

  Thin-layer chromatograpbqmx.v(7,by2jf j n 2bhy can be used to separate photosynthetic pigments. Below is a diagram showing the separation of pigments in this way. Rf values are used to work out what pigments are presenyjjn2b27vq,b .b (f xmt 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 cla,pdm9do: r2,qion 5z,9nrvhloroplast.

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 photosj x6zqr)cg) zree;od/d2p0 k*o0+dzjynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzy)k2 ;*uuqc 5w-(cscd7 5e nlobgn-jrlme-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 pj,uhjzp a18+g fnjd wczu. e6mnk);:m/) d2jgredict future rates of photosynthesis and plant growth. Which of the following is an advantage of enclosed greenhouse experiments over free-air carbon dioxide experiments (6jnd2ujm.juc n:;m z e1dg hp)jz fwa )/,gk8+FACE) experiments, when conducting carbon dioxide enrichment experiments?

  In algae, what is the role of carbon dioxide in photosystem II, and what form isv 5rtd1/9 m h9u-nl(iskvww2r it f hr k5vm il s/vdw-2wn1r(tu99ound in?

  What were the results obtained from 98 m kupv8wunfs++s6tthe lollipop experiment that enabled Calvin to determine the order of the light-independent reactions8w6f+8pns9 u ktmvsu + of photosynthesis?