Which term describes the splitting of water molecules in the presence vkc)n4e5sg)*pow +fa of light to produce electa5n k*g)+c pvoe sw)f4rons, hydrogen ions and oxygen molecules?

  Which of the following is involved in cark qgnbl tdn0or71/, e)bon fixation during photosynthesis?

  The diagram below shows an experiment investigating the effect ox9a4xd7+l k/nb frp0x f temperature on the rate of photosynthesis. Which of the following is not xn/ 7 9p0rkx+axlbd4fa method of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X representum mi)k5ct+8k ?

  The Hill reaction shows ele7 ijvyzh)od4y)axw;m; sctwg b 37,2: jg7fb mctron transfer in isolated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of the ncvo7f:twj4g mxbw3d;g 7 ,m;ys7 a)yhz2b)jiatural final electron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below shows part of a chloroplast in a leaf.Which of theta,a1 ees82x)kpht7a dyp1t.vr2ke , following structures are found in the part ofhpa2yt1a71et,e,tveakd x r8. ps) 2k a chloroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at different temperaturoo53q s17ggi(b z sy*qes.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate of photosynthesx3*v/fz(xly 7thfj(v is.

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

  The following processes occur in the C,e7fce1v*c4bxgssa5m( 8e m palvin 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 correc.:+nelyen+t9as9 2k: *exo fzhl* ot ltly shows where chemiosmosis takes place in photosynthesi+okfal: x tll+zn*ty99 e 2eo*h.ns:es and aerobic cell respiration?

Coleus blumei is an attractive houseplant with x/duhnv9. dj/hd ,0w wred 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-depenbwyy, -1zjuo1 dent reactions for photosyny,by-uwjzo 11 thesis?

  Which of the following correctl +)6r m38oinmh7s qfmjj4l/hry 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 thisimik *:u/hs/3u hlgo+e /*tc c light-independent reaction of photosynthesis?cch3i:us /**e +otg /imuk/lh

  Which structure of the chloroplast i*dx- zbedoapv *f3 -x-s most involved in the production of reduced N odfv3a z*b-pxe-x* d-ADP and ATP?

The diagram shows the s-ktbf(ark /7 )zse so7eparation of photosynthetic pigments using the thin-layer chromatography (TLC) technique in the solvent propanz)okkr/7-seft as(b7 one.

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 climatebw-db4 g3c5msytgqv4*pest. du44n ( change on the rate of photosynthesis, pondweed wg (cgt54w *e m-4 3y4btdvbpsu4qnd.s as 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 represents the correct range of wavelengths of li1/fy40ucpfdj g7kpm 3ght that are absorbed and reflected by chlorophyll for d fm/g1kjp3uyc0fp47 photosynthesis?

Photosynthesis is a process where carbon compounds are produced in the presence 1mqnx41h; lp7n5hpt v/d 47sn s3af gxof 1xs4/ 4 np5;3s 7f7dnx1hta l mgpnhqvlight.
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 thylakw wi+oo g/h;ny+lxb :5oid membrane in the light-dependent reactions onx :ogo5b+lh;/ yw iw+f photosynthesis?

  What is the process that takes place before eac5a3 m3n h4ppxcited electrons are transferred fr m5chpn 43a3apom photosystem II to photosystem I?

  In which structure of theh91oqx0s icb+d .3agp chloroplast does ribulose bisphosphate undergo carboxyld aq.o1shpx+0g i b39cation?

  Which products are formed at the end of the light-dependent and light-4tq/da1fd( 0g4 c0ps;cm mwp yindependent rea/(m4pftc 4w dp0;gm acs qy01dctions?

  Thin-layer chromatography can be used to separate photosynthetzrb/p1kvy )3bu3* zwbr1 5+z5t rqg peic pigments. Below is a diagram skert*3zbz rwgr315yq + )bzv/pp ub51howing 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 ulte5 an2yz /zm*k+ln )qarastructure 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 acwwv*bg3b -kq6tion spectrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-cat *zzfc 3or;+ykalysed 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 tz-4z - 6dhyiq jjqru*0o predict future rates of photosynthesis and plant growth. Which of the following is an advantage of enclosed gr *ih4 z0y-ju6zqqjr-d eenhouse 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 II1 z)rj*pel+j,* 1w9w t;t bgqfxm ;sth, and what form is it found in?+9ebms ww 1ttf ),*jqthg rl ;j1;xp*z

  What were the results obtained from the lollipop experiment that enabled Cal kcw(/v0 kww 54/qhskivin to determine the order of the light-independent reactions of photosynthesic v kk5/wswih(k/w4q0 s?