Which term describes the splitting of kzpkb9ly/d1 ; water molecules in the presence of light to produce elek/ dkypbl;z1 9ctrons, hydrogen ions and oxygen molecules?

  Which of the following is in0 tnqo1 39zi+qk xsx5u ktl1. vowba7.volved in carbon fixation during photosynthesis?

  The diagram below shows an experimenk5dn b 5qkwo20v0nn0 c d;d*vnt investigating the effect of temperature on the rate of photosynthesis. Which of the following is not a method of keeping a contdnc0nvd0 ovk 2n;nw5kd0q5*b rolled variable at a constant value throughout this particular experiment?

  What does X represent? th )pu:mhm :9b

  The Hill reaction shows electron transfer in isolated chloropl.jouzbf,bl e;bm;3(q3((l z 4g htcdhasts for the light-dep lj3hz(h3c me ;bf(tq,oz gbldbu4. ;(endent reactions of photosynthesis. A blue dye, DCPIP (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 a chloroplast in a ,ryh9h.n2sgf puwo ;2 leaf.Which of the following structures are found in the part of a chloropla.nshr w, y2 p;ohg29ufst labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of ph..qg tqo7 . 8xe8;/knjgdgbm8vsgu, q otosynthesis at different temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on the xy*oks9 yl 8qecm8a*8rate of photosynthesis.

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

  The following processes occur in the Calviuo: xzh 8qgm)3n 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 wher x7reykh,mdto5cw *ov 47;i0 de chemiosmosis takes place in photosynthesis anr ,0v7e7dmxc 4wth;i okdoy5*d aerobic cell respiration?

Coleus blumei is an attractiv2pt4shu dku8 ;1iqae(3so j8se 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 hydrogen ions in thes *cf7deam */9evn)fj light-dependent reactions for photosynthesis?/7e n f)jcd 9save**fm

  Which of the following correctly desc gk dvvty061logo*q +-c -yu.mribes 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 reactionzuke70nilaxw0o: 6; s is occurring in this light-independent reaction of photosynthesisw0x60n7i:ao;u sek z l?

  Which structure of the chloroplast is mo4kv e g3xag(j29b2z:3ic )by,vq w mw4)mattz st involved in the production of reducedg,beb3cvkw t zvt3a 4)4mqgx a i(w2ymj )29z: NADP and ATP?

The diagram shows the separation of photosvc 8mr/whs4 q;ynthetic pigments using the thin-layer chromatography (TLC) technique in the srcvh;wm84/ qs olvent 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 j,rt(hz+* 1 sb:zpbqw,qhy8sinto the impacts of climate change on the rate of photosynthesis, ponrsqtwqh zh8p 1szb+, y(b,:*j dweed 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 represents the correct range of wavelengths of li ntrs.i501;vg n7zvlfght that are absorbed and reflected by chlorophyll fntrfg7v i s;0nv1.l5zor photosynthesis?

Photosynthesis is a process where carbon compounds are produced in the prewkpp ( ws55w mm4 ejjpk)0/r1vsence w5pse 1 )vkm(rw j50kmjpw /p4of 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 acrosg/e kp3m9 ch; k5-omumwjn( q7s the thylakoid membrane in the light-dependent reaction-mk c9w(hn km7u;p/mj 3gqo5 es of photosynthesis?

  What is the process that takes place before excited elev s-pbg qtx lyjq3d )0o33 xz31s,m)kvctrons are transferred from photosystem )l3g y13 )vqzq dxb-,k3xs3sp tvj 0moII to photosystem I?

  In which structure of the chloroplast does ribulose bisphosphate undergo*no z( /gf25pnu qz5rl carboxylfo(l5p/*z 52u qgrnznation?

  Which products are formed at the end of the light-depeng 9z96 zswxe.vdent and light-independent reactionv 9e zxzg9s6w.s?

  Thin-layer chromatography can be used to separate photosynt6a8 4 nmcuqh8chetic pigments. Below is a diagram showing the separation of pigments in this way. Rf values are used to work out what pigmea c6ncmq 488uhnts 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 ulttftrs o1k7/esu0g 4o)rastructure 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 actib8kst-e48uufxm3fz2*n 2e uhj p1m 0non spectrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are en cjh)e-6cx(z j cdp0h8zyme-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 prediem4+hx:8ve4h p j 2hihii 75voct future rates of photosynthesis and pvhe4 +7i mhoih452ex8hi:v jplant growth. Which 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 phq6g5n m1c3wlzotosystem II, and what form is it fouq 6gmc wnzl135nd in?

  What were the results obtained from the lollipop experiment that enabled 5yvjzpwha4(kw*54hgv 2t n exuy01t)Calvin to determine the order of the light-tg (khpvv)zt5e4*4 ah0wy u 25wnxj1yindependent reactions of photosynthesis?