Which term describes the splitting of water mo8wabjy*i g5+ zlecules in the presence of light to produce electrons, hydrogen ions and oxygen molec8b jawz+ gi5y*ules?

  Which of the following is involved in carbon fixation during phndqp(p k3xa 5k (02xnrotosynthesis?

  The diagram below shows an experiment investigating the effect of tek*iri-hqz dm5 o ).e8nh6.pqwmperature on the rate of photosynthesis. Which of the following is not a m). hqe-8 5 qpoinr*.zhikwdm 6ethod of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represent4fam;:k)bzopdw+ )a zl+zm+t?

  The Hill reaction shows electron transfer in iso7e zuwyd9hnflg .p-3/ lated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenoll9f en pwu-z .3yhg7/d) is used instead of the natural final electron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below shows par8zf+zq.q;:t)n j(j pn2 +ejut npnyp 9t of a chloroplast in a leaf.Which of the following structures are found in the part of a chloroplast labtnp+u;q z2q jy8nf(zpe)n . np+9j:j telled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthc5q-qrw- as.lesis at different temperatures.

What conclusion can be made?

  The graph shows the er5oe(+/3 rz bhktqd5wffect of light intensity on the rate of photosynthesis.

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

  The following procesn;s plj5 w2 6vp: vu6,ox.judhses 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 chemiosmosis takes plac5fsmzs g ,9fk-e in photosynthesis and aerobic c zk fms95sg-,fell respiration?

Coleus blumei is an attract-mocb5w xz4s 9ive 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 sourc6v/6jvjcpy9qa+pp/ * f jp-h 0pu8qdve of hydrogen ions in the light-dependent reactions for photosynthesvjp-*u//cpv vjpaqj dq68ypp 90fh6+ is?

  Which of the followio h :.rxg1 e-00shq(sj l.jwmong correctly 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 this light-independent)q :x fblp,gk 5dx:oj; reaction of photosynthesikbxpf )xg,q:d:lj5 ;os?

  Which structure of the chloroplast is most involved in the production of reducedo*u m(ngdq:o6 n,o;zk2kt3up) m.e br NADP and AT pr(;d otnkmobng:m,)u26oue.qz3*k P?

The diagram shows the separafuv79ez-+ibuawr +b,s z tv+9tion of photosynthetic pigments using the thin-layer chromatography (TLC) technique if+vz-et ,9v+sb9ua+ wz ui7brn 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 uf7r+e+l rus1 ioea 7r,00ucp into the impacts of climate change on the rate of photosynthesis,err 1upe u,r+fca 0+s i70luo7 pondweed 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 light v2hd1q, xb6 8 ihf1pkhthat ardf6qihh bvk2p ,8 xh11e absorbed and reflected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compounds are produced in the presence ,ye 7btwrrvx8:b.6ze7z x8etrr. ,:bwy 6bevof 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 thylakoid membrane 9g( r+0tq.;e,r d,n ec wldowtin the light-dep.t dlwwnt0qr eo;(rc,e9dg+,endent reactions of photosynthesis?

  What is the process that takes placew +/atx3 p2rw nl;bcl2a*m7i dwt4ma4 before excited electrons are transferred from photosystem II to2p wt7mab w mirlcw d24*/+nxa3;alt4 photosystem I?

  In which structure of the chloroplast does ribulose bisphow-e 2jy,zx1rxsphate undergo carboxylation,w1yz2xr j -xe?

  Which products are formed at the end of the light-depe ujxx8ml2cbf 6j7s6yux+( hu7ndent and light-independent rbjxlyms82fu6ucxh7( u7 x +6j eactions?

  Thin-layer chromatography can be used to separate - lqn jy:m9h2tphotosynthetic pigments. Below is a diagram showing the separation ol: qy2jn9 th-mf 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 ult gzpxy n5avu5n;u-p l09 nk)4n/e+xu xrastructure 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 action sb3u z5rp43r p r,*dbfrrom1) opectrum for photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-catalysed +4/( pbpyevu *y 7 xgsu4w9fgqreactions.
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 enrico,9x 3)kahp-4dbdbarhment experiments are used to predict future rates of photosynthesis and plant growth. Which of the following 9d-hp) r3kaox,a4b db 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 thb ,qij de .q4g95ertc 9ap9+kye role of carbon dioxide in photosystem II, and what form is e t4 59rqj9qeiby9kd+, gpa.cit found in?

  What were the results obtained from the lo sccq9a50d1ajy tls74llipop experiment that enabled Calvin to determine t9sc57sq 4 lc ay10adjthe order of the light-independent reactions of photosynthesis?