Which term describes the splitting og5xh mwpm )84kf water molecules in the presence of light to produce electrons, hydrogen ions and oxygen molecules? hm458 gmkwx)p

  Which of the following is involved in carbon1y*6*v9r c+vvj (tr yg0 ih daqqgor71 fixation during photosynthesis?

  The diagram below shows an experiment investigating the effectj;)jpw5:ts1lgq sc( g/w.pia of temperature on the rate of photosynthesis. Which of the following is not a method of keeping a controlled variable at a constant value throughout this particular exper q: /)pjcwt ls1; pa.iwggs(j5iment?

  What does X represent? +ixos )iux g0(t6e(y d

  The Hill reaction shows electrw *f. /dkpks.ion transfer in isolated chloroplasts for the light-dependent reactions of photosynthesis. A blue dye, DCPIP (2,6-dichloropheno p*df. ik/swk.lindophenol) is used instead of the natural final electron acceptor. What is the final electron acceptor in photosynthesis?

  The micrograph below shows pek k;rn w7pve4)cdi)6art of a chloroplast in a leaf.Which of the following structunkd )i67vp; )rwcee 4kres are found in the part of a chloroplast labelled X?
I.Photosystem I
II.ATP Synthase
III.Ribosomes

  This graph shows the rate of photosynthesis at different vph-4reo s,gi 2::2tnuk 7mebtemperatures.

What conclusion can be made?

  The graph shows the effect of light intensity on the rate of phot grh9s6t0 ;4q4y jec.mlftj.mosynthesis.

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

  The following processo5womtcb qo88)x)/voes 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 lqd z+/*fu0 +babku7 vchemiosmosis takes place in photosynthesis and aer+a/uk buq+ lbz0 *fv7dobic cell respiration?

Coleus blumei is an attractive sk;4-tp u* wgzhouseplant 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 thw4 1wna sv4il:6ag q6ce light-dependent reactions for photosynthesig:w6aincsq1 6 4v4alws?

  Which of the following correctly desc ek4 xj63ehyq-s-: erxoa q3yc,0m7mr ribes 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 lia;*zz j /qudx8.c:tzcqc s azb56+r bf-v35ilght-independent reaction of photosynt 6z8z+a dc;lbbjqxrt.zsai /-zf:c5qvc* u53 hesis?

  Which structure of the chloroplast is most involved in the product0brg, a2,k5 mp6rv2jlmrtu :cion of reduced N,a5: ,2m rpb6t2kgmjvru0r lc ADP and ATP?

The diagram shows the 7hqs2;s0-; lvdh04igw jy. prxt9w asseparation of photosynthetic pigments using the thin-layer chromatography (TLC) techniqur0wghv ;sl-i94 xs. ;yjh0d7tws 2aqpe 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 olvjz;num. 0wg s;lg6j86 * eipf climate change on the rate of photosynthesis, pondweed was placed in a number of sealed conicauv6; 6iwn p8;zlgesj0m.lj*gl 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 correctpxfr59;4i * 2lne5auwkk)djy range of wavelengths of light that are absorbed and reflect5 kfpni2 9weuj) ; ry*kdx5l4aed by chlorophyll for photosynthesis?

Photosynthesis is a process where carbon compounds ar,g33z+9mit4 qa 5 4ox qodmsahe produced in the presence q 3qo9mm,ztxi+h ogd543a sa4of 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 ac9 2r91 n;5tga qfyxsooross the thylakoid membrane in the light-df9a; 2nsxo5gr yqo 1t9ependent reactions of photosynthesis?

  What is the process that takes place before excited electrons are transferrebat+w/ v8rjk rck(g3 9d from photosystem II to photosys83/vtb kkr a j9(gwcr+tem I?

  In which structure of the chloroplast does ribulose bisphosphate unpeps7 o a,m-jsw0g 1p)dergo carboxylation?mpawg 1 ps-,s7)opj 0e

  Which products are formed at the end o50tpxag;oj*y f the light-dependent and light-independent ray0; txp5o*gj eactions?

  Thin-layer chromatography can be usedp 3n:5xn9mnn xp g+2cblw3vu jqe; l-3 to separate photosynthetic pigments. Below is a diagram showing the separation of pigments in this way. Rf values are ubvqx+ g wpnpln;23m5ue:j3n nl3 x-9csed 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 ultrastructure of a chlorop5t/0 -ag w xja.9rstuzlast.

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 photosyntheys sra i:6j :2nlcjv-1sis.

What can be directly inferred from the graph?

Photosynthesis and cellular respiration are enzyme-catalysg(jqu-gh.bz wt am9 .4 z0/djded 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 predii8buzlf)48v3ucsqc3; z ct/ ect future rates of photosynthesis and plant growth. Which of the following is an advantage of enclosed greenhouse experiments over free-air carbon di i)u qcut;8/8eclzvszb3f3 c4oxide experiments (FACE) experiments, when conducting carbon dioxide enrichment experiments?

  In algae, what is the role of carbon dioxide in photosystem II, and what form ison; x1b6(oi lp it found inplo(bx6 ;in o1?

  What were the results obt( g s 6e3ytc6r5 ld-as(qm;rzsained from the lollipop experiment that enabled Calvin to determine the ye6cmrg(5sqd 6szr;a3 tls( - order of the light-independent reactions of photosynthesis?