Which term describes the splitting of wa6xq eni( rt8(sk s85xnter molecules in the presence of light to produce electrons, hydrogen ions and oxygen molecule( e86 k58nntrsxqi sx(s?

  Which of the following is involved in cxkki*d+58ebn rd 5-p darbon fixation during photosynthesis?

  The diagram below shows an experiment investigating the effect of tm; a*+l sv) adx*wb0od0l1wdq emperature on the rate of photosynthes+l)1xd dva a0 *l0w dobqsm;*wis. Which of the following is not a method of keeping a controlled variable at a constant value throughout this particular experiment?

  What does X represent? lzv)h rj9xk 3mb 0j/jyt:/l*5ta zuz4

  The Hill reaction shows electron transfer in isolated chloroplasts for the tcx5 qmvk/i 26light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichlorophenolindophenol) is used instead of the natural final electron acceptor. What is the final 5c mxiv /qtk62electron acceptor in photosynthesis?

  The micrograph below shows part of a chloroplast in a leaf.Which of the fa (g2bagb-v ;o. byv,vollowing struct g.o bgbvab2vy,;a-v( ures are found in the part of a chloroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the r8hti- 2rt hx:sate of photosynthesis at different temperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on 52 sm9bpwmut-wk49rd o v,ep.hupn1 4the rate of photosynthesis.

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

  The following processes occur in the Calvin cycle. 8p6q jwhqb;uw4p b84l
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 correctlyp5y qj,,res) h shows where chemiosmosis takes place in photosynthe ),je s,hqyrp5sis and aerobic cell respiration?

Coleus blumei is an attractive houseplant witckf a8lz/pagm)c4p qo v. 58p)h 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 0eww1lz8zgw d-p8 7g yions in the light-dependent reactions for photosynthes-8w 10zg g7zwey 8dlpwis?

  Which of the following correctly describes photosynthesis 8t-bgkj w 9h8d ukt7s7or 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 / mhrk6p h hm8-,ld7krkw0vj+this light-independent reaction of photosynthesis? h-r 7 8kj 0k l6+rmk/dhvp,mwh

  Which structure of the chloroplast is most involved in the ph/yon9i9n9jo/ftc t/dmi4 a-roduction of reducedy-/m9i 9oca h d4ti/ f9nont/j NADP and ATP?

The diagram shows the separation of photosynthetic pigments using the thpl h/ ,+okqh5nsq 3df)in-layer /odnq 5+),kpqhs3 hfl chromatography (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 clwz ,bc zv6)2u7srlgyvb ;g+ f2imate change on the rate of photosynthesis, pondweed was placed in a number oblfg27)v s;vuwzzb +y6, c2r gf 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 dx c;4q e6 -bhntgfh3)of light that are absorbed and refltne h) 4q dbgfc;3h6-xected by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compounds are produced in tht s,/vk fhif/7lmo7r(4c (bz ee presence of s4bih7 fzf7, vlme/(tr/ck (olight.
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 dge1(.sczacbd 83f-d gradient across the thylakoid membrane in the light-dependent reactions of photosynthesis?df.3bc-gd8 a1 c(e szd

  What is the process that takes place before excited electrons are transfer0nhgshu,b (+ cred from photosystem II to photos0bs,u(h g +hncystem I?

  In which structure of t9ohy+ 2f lv ydwmu0l/2he chloroplast does ribulose bisphosphate undergo carboxyl0v2y +2hod9lmlw/u fyation?

  Which products are formed at the end of the light-dependent and light-ind1)(wf 1z-hy)r3b.w- tc uz rc5pexzsvependent -)vh ft. z zy )wcr3s1w1eur(zcpx5b -reactions?

  Thin-layer chromatography can be used to se;h1x wk:ujdj8 parate photosynthetic pigments. Below is a diagram showing the separation of pigments in this wayw;:djuh1k 8 jx. 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 ultrastruah am6 p-xyp-26dyu(l rwdwe/)r/z ;lcture 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 for photop6q de v.n-t ;hk/yt)usynthesis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzymoa*zo9dkb cu1q 2-hz cl:1 *mae-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 experiment9 /r45f wmdoc8hll2hhkp5 e *as 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 dioeh5w fr c* /lo5dhh2m4 l9a8kpxide enrichment experiments?

  In algae, what is the role of carbon dioxide in photosystem II, ao6emn.w91ri g nd what form is it foun19n6g r iwmeo.d in?

  What were the results obtained from the lollipop experiment thav qco9 rkqj byvjy45)t;x4 gzye-1z)x n y77f4t enabled Calvin to determine the order of the light-independent9 y5tf)xb4 c1 44zyvv7q;-q j7o yrygk)njzxe reactions of photosynthesis?