Which term describes the splitting of water molecules in the presence of light tiwgg (quy429olo,*2x 3k ofi yo produce electrons, hydrogen ions and oxqif*2, wi ox39u(yg 2ooyl 4kgygen molecules?

  Which of the following is + apc*8+qnkzginvolved in carbon fixation during photosynthesis?

  The diagram below shows an experiment investigating the effect oiqlfgmmy 408tv7 b4xs 3lz q7mjm,x,,f temperature on the rate of photosynthesis. Which of the following is not a method ob,q g,m77zl xtmyiv,jmx4 s84lfmq03f keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represent? bw2xy/7 1zfsk

  The Hill reaction shows electron transfer in oekyy 3l 2ljyk60hu.9 isolated chloroplasts for the light-dependent 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 photosynthesisjo ulel.9khky6y 3y02?

  The micrograph below shows part of a chloroplast in a leaf.Which tc5rji 3uhfir i)63 c4of the following structures are found in the part of a chloroplast labeliicch36r4t 5u )jfi3r led X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at differena;fl3uae m.sh+wbpcjrdn 4/h-a l 39 +o1jm u(t temperatures.

What conclusion can be made?

  The graph shows the effect of -1k ;m;; :fvupoz-ed4 bmk ytrlight intensity on the rate of photosynthesis.

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

  The following processes occur in the Calvin cycle5 x c3g-vo)l- jrv 2dn1f*glyv.
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 chemio()xcoyj sv07 ysmosis takes place in photosynthesis and aerobic cell respirv(x yjc7)y o0sation?

Coleus blumei is an a/e, (but u+qwb5jwmm5ttractive 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 hydrl c5mr+gi.p io0u3 o3pogen ions in the light-dependent reactions for photosynthesis?0l 3u+g 3op5iop c.imr

  Which of the following correctly describes photosynthesisfjb* 7 0vpaba8 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 this light-indepq0xdbd1tysf / ;.h bm-endent reaction of photosynthes0-.dt1h bdyb sfx;qm/is?

  Which structure of the chloropl0if98/ni11mtd ureayy/x s/avi uf8: ast is most involved in the production of reduced NAr8fd m/at:a i810x nisuy / ufvye9/i1DP and ATP?

The diagram shows the separation of photosynthetic pigments usz6-.unbpk** sd yw m2ning the thin-layer chromatogrw*zsp 6-b* ku mn2d.ynaphy (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 impacts of climate change on f/ j7 lf20fk fl+ jk rtqr8ld+9mp*nwqx+l/b(the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containing a solution o/dfrpljqb8 lw/7 rt(j*k9qfk +lx +n+f l 2mf0f 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 o3b3 gc3 xdfk9xf wavelengths of light that are absorbed and reflected by chlorophyll for photosk33bx xcgf3d9 ynthesis?

Photosynthesis is a process where carbon compounds are produced in the presence 5kouvbw;3 ml 71q62m wxyijc1 ;qs 6mrofmbvq72o 1 q mi6jxy1lw;w6 sc35 ;krmu 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 acroshx)9hu4 topj -s the thylakoid membrane in the light-dependent reactionsu h op-)jx94ht of photosynthesis?

  What is the process that takes place before excited elebk -2/rpblcz6ctrons are transferred from photosystem II to photpc /26-lbbkzrosystem I?

  In which structure of the chl63perk omci4b ix5ibp0 25w9 loroplast does ribulose bisphosphate undergo carboxylation? i5pl3k2mbr4ibep6i 9 0cxw 5o

  Which products are formed at the end of the lij kx 7 w.dnrcq/o:g1b+ght-dependent and light-independent reactrkxgo n+. bjc/ 1dw7q:ions?

  Thin-layer chromatography can be used to separate l8x1lif:lq5g photosynthetic pigments. Below is a diagram showing the separation of pigments in this way. Rf values are used to work out what pigments are present in the leaf ex 5qlxlg1fl i8:tracts.
Which of the following are the measurements that need to be taken to calculate the Rf values?

The diagram below shows the ultrasn 5y y*fg.m.87acszzix7e /y ltructure 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 act 3fl:s)2kr x4h4j :0b soajdqyion spectrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration5o kfkno*q0 yc.xr) m* 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 ar 4nk:q2v el/5f4msh 3ijedm y4e used to predict future rates of photosynthesisik5m2les4n:d4f me yj v4/3qh and plant 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 rol.,hndak 9d 1*px5womz((tqb8tm uspv c63v-ye of carbon dioxide in photosystem II, and what form is 1udp vs 3t6d*- y89toc 5 xmq n.mv(,pzakwb(hit found in?

  What were the results obtained from the lollipo9bp,qne;rq8 s w/1ra1qj qe 5qp experiment that enabled Calvin to determine the order of the light-independent reactions of photoss9qaj,1qq8/er5 qrpq;1 n b ewynthesis?