In the Form of Notes This Is a Learning Process

PHOTOSYNTHESIS WEBQUEST

WRITE ANSWERS ON SEPARATE SHEET OF PAPER.. IN THE FORM OF NOTES…THIS IS A LEARNING PROCESS

A. LIGHT – Electromagnetic Spectrum http://earthguide.ucsd.edu/earthguide/diagrams/absorption/absorption.html 1) Draw a picture of a Hydrogen atom. 2) What happens when the electron absorbs electromagnetic radiation (eg. light)? 3) How does the electron get back down to the lower energy level?

B. http://www.cix.co.uk/%7Eargus/Dreambio/photosynthesis/light%20dependent %20reaction.htm Photosynthesis takes place in two steps: Light Reactions and Dark Reactions 4) Draw the Light Dependent Reaction (the figure at the bottom) – then read through the steps listed at the top. You have to know this, so take your time drawing this and reading. 5) Click on Light-Independent Reactions on the left (also called Dark Reactions or the Calvin Cycle). What two products from the light reactions are used in the Dark Reactions? 6) What does “Carbon Fixing” mean and where does it happen?

C. http://www.abdn.ac.uk/~clt011/flash/samples/photosyn.swf 7) Fig 1 – Explain WHEN respiration and Photosynthesis occur. 8) Fig 2 – List 2 conclusions from the experiments. 9) Fig 3 – What did Warburg conclude? 10) Fig 4 – Plants give off Oxygen – where does it come from? The oxygen in carbon dioxide or the oxygen in water that plants take in? 11) Fig 5 – This is the Dark reaction (Calvin Cycle) of Photosynthesis (when the C from CO2 is “fixed” or used to make a sugar like glucose). Follow the gray Carbons from the top – there are 6 total Carbons from CO2, but they go through the cycle one at a time and they build the sugar at the bottom of the circle. Nothing to write – just look at cycle. 12) Fig 6 - Click on the Chlorophyll solution – what two places on the graph show the highest rate of Photosynthesis (list the wavelengths and their associated colors). 13) Fig 6 – Click on the Photosynthesis… watch the graph – this is the Action Spectrum of Photosynthesis. DRAW the graph showing both the Absorption Spectrum and the Action Spectrum – be sure to label the axes. 14)Fig 7 - What 2 products of the light reaction are used for the Dark Reactions? 15) Fig 7 – Look at the Calvin Cycle (Dark Reactions) – How many ATP and NADPH are used? 16) Fig 7 - Where are the light reactions located? D. http://www.phschool.com/science/biology_place/biocoach/photos ynth/overview.html

17). Copy and complete this sentence:

Photosynthesis transfers ______from water to energy-poor CO2 molecules, forming energy-rich sugar molecules. This electron transfer is an example of an oxidation-

reduction process: the water is ______(loses electrons) and the CO2 is ______(gains electrons).

18) Draw the Electromagnetic Spectrum (including the wavelengths). 19) Which colors did the oxygen-dependent green alga Spirogyra move to? Why did they move there?

E. http://w3.dwm.ks.edu.tw/bio/activelearner/08/ch8c1.html 20) Look at the picture of a chloroplast – label the parts on the Diagram attached to this WebQuest 21) What are the similarities between cholorplasts and mitochondria?

F. http://www.wiley.com/legacy/college/boyer/0470003790/animations/animations.htm Click on Photosynthesis – then click on Strategy/Players. 22) Read through the slides, then draw a table like the one below – then list the similarities and differences (electrons, mitochondria vs. chlorophyll, etc)

MITOCHONDRIA (Respiration) – CHLOROPLASTS - Photosynthesis Oxidative Phosphorylation

Take the QUIZ – WRITE OUT THESE sentences and fill in the correct answers: 23) The oxidized form of water is ______due to PS. 24) The molecule that is the source for reducing power (RIG=reduction is gaining) is ______. 25) ______absorbs light. 26) The enzymes used to convert CO2 to carbohydrates are located in the ______. G. LIGHT REACTIONS (LIGHT-DEPENDENT) http://www.science.smith.edu/departments/Biology/Bio231/ltrxn.html 27) List the four main stages of Light Reactions in the ______of cholorplasts: E S P A

Now, click on each one and watch the animation

28) What does chlorophyll a do? 29) Water gets split into what 3 things: ______, ______, ______30) Electrons released from splitting of water go where: ______. 31) Hydrogen ion (H+) concentrations increase in the thylakoid space - what 2 places did they come from? ______and ______32) 9. How is ATP produced?

33) What is this process called (same name in respiration): ______

H. http://www.fw.vt.edu/dendro/forestbiology/photosynthesis.swf 34) animated/audio - Click/Read through – then click on each number (1-6) and describe in your own words what is happening

I. http://www.cix.co.uk/%7Eargus/Dreambio/photosynthesis/photosynthsis%20animation.htm 35) Describe in your own words what is happening during the DARK REACTION.

J. http://www.science.smith.edu/departments/Biology/Bio231/calvin.html 36) Describe the 3 stages of the Calvin Cycle: 37) What does RuBP stand for? ______38) What is Rubisco and what does it do? ______39) Draw the Figure (Calvin Cycle) summarizing the 3 stages ON THE FIGURE (include numbers of molecules, etc.) K. http://faculty.nl.edu/jste/calvin_cycle.htm

40) Read through the introduction. Then read through and play each animation – add to your diagram above if necessary.

41) DRAW and Complete this table (hint – the yellow table at the bottom is for 3 turns): Calvin Cycle = 1 Turn To Make 1 Glucose Calvin Cycle = 6 Turns IN OUT IN OUT

CO2 CO2 ATP ADP ATP ADP NADPH NADP NADPH NADP

L. http://www.stolaf.edu/people/giannini/flashanimat/metabolism/photosynthesis.swf

42) On the Diagram attached to this Webquest, label the following:

Photosystem I, Photosystem II, NADP+ reductase, ATP Synthase.

43). Show with arrows what happens to NADPH, H2O, sunlight, H+, Oxygen, and electrons (2e-).