Which term describes the splitting of water molecules in tcgh ; 3h np:z* 1p9ipdrgf6/0w)oiazthe presence of light to produce electrons, hydrogen ions and/h fi1 ;0tdp*6h awzipgn:c9o)rpgz3 oxygen molecules?

  Which of the followin5p,hhdwr*k 4z5*wa ebg is involved in carbon fixation during photosynthesis?

  The diagram below shows an experimen. 2n2sydlvm :o jre*,ct investigating the effect of temperature on the rate of photosynthesis. Which of the following is not a method of keeping a controlled :ls de,. 2 n*jycvmro2variable at a constant value throughout this particular experiment?

  What does X represent? 7u m6k7b ugjhlr/7 s:y

  The Hill reaction shows electron transfer in isolat u6uy*07mgmv k:9uxgfed chloroplasts for the light-dependent reactiongux0vm7k f:y*g 6u9 ums 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 tg8a381 ee pz ;4+sxknmc r+ugs(dta)a chloroplast in a leaf.Which of the following structures are found in the part of a chloroplast labelled X +) +tasnxa;8erg d18ezkcupg (34mts?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at different temperatures. 3z2u2e bwt h4h u6ft2t

What conclusion can be made?

  The graph shows the effect of10tgyi; gb /lo light intensity on the rate of photosynthesis.

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

  The following processes occ4yiwg,y0y*o )j n6wq eur 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 showsagr-p4 uh:u 1m where chemiosmosis takes place in photosynthesis agum-a 41ruh:pnd aerobic cell respiration?

Coleus blumei is an attractive ho1j,g vyctcv2tf5 08oouseplant 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 reactions for s a:lwsqcb056vx oq;4 photosynthevx6qqwss a; c40 obl:5sis?

  Which of the following correctly describes photosynthesis or respirationh h+fr0p3 rgc6?

	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 reaction rb7/ jm;qf7wkof photosyn; k77w bqfmrj/thesis?

  Which structure of the chloroplas /ndu(xpzv0m n3sd15jt is most involved in the production of reduced NADz/1dd3n vp(m0nu5sjx P and ATP?

The diagram shows the separation of photosynthetic pigments using thsbm1 jl86usl4 e thin-layer chromatogr 1mj6usls8b4l aphy (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 thbk2rl.texqm(qg4sal: ) (2tr e impacts of climate change on the rate of photosynthesis, pondweed was placed in a number of sealed conical flasks, each containi rr:4 t2qa (s(q2lk.telbm xg)ng 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 thate)bz4 8lmv33al g3ofd are ad golvf3e)8 lzbm43 a3bsorbed and reflected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbl*0:ajfl:5f+wx 3wq x0urfok on compounds are produced in the presence of ligfll+50axo3 wx f 0 fujw::qk*rht.
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 qj:e)/7 jkv m,wsh1 zyproton gradient across the thylakoid membrane in the lightsvh)m e1 j7:/kq,wzj y-dependent reactions of photosynthesis?

  What is the process that takes place bef0 h fa6ymwjkid6p808jore excited electrons are transferred from photf68yij68 m dh0kawjp 0osystem II to photosystem I?

  In which structure of the chloroplast does ribulose bisph 1v ntq:nuw8v.osphate undergo carboxylation?vun 8n1w :.vqt

  Which products are formed at the end of the light-dependent and tgz27 ry-e*xs1xw/bn light-independenx2e t/7byx1gw r -s*znt reactions?

  Thin-layer chromatography can be used tot:ht5 gy97 wpbh ;qz8h separate photosynthetic pigments. Below is a diagram showing the separation of pigments in thisyhtwh :tg9hb5p z7q; 8 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 thevgw,dm(ipo/:)o9 l8xo eh s(ll f35p z ultrastructure 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 spectrum foc7sn6w7 t(f7k6 ltfjq r photosynthesis.

What can be directly inferred from the graph?

Photosynthesis and celtemc 8l ddyy+2 jo(m,v )vr: 5x2slmw7lular respiration 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 g6wnj2z7 /r8njxhu*g experiments are used to predict future rates of photosynthesis 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 di8 n/x*2 6gnwgjrz h7ujoxide enrichment experiments?

  In algae, what is the rolhzzt hx5(*mxb )b:(gee of carbon dioxide in photosystem II, and what form is it found in?(mh() hx5b*z: z tebxg

  What were the results obtained from the lollipop experiment that enabled Cutzh2y 0m ad l.c*6px,alvin to determine the order of the light-independentu l,*t2 ymh.0cd xza6p reactions of photosynthesis?