SLE132: Photosynthesis Report Template - Energy-Rich Compound - Electronic Format - Engineering Assignment Help

Assignment Task

Prac 4 Part 2: Photosynthesis Report Template

The assignment is marked out of 50 and will be converted to /10% of your final assessment for this unit.

1) Electronic Format

The worksheet (template) must be produced entirely in an electronic fashion. Hand-written or handdrawn components, be they as original or scanned images, will not be accepted and not receive any marks. Submit electronically as either a single word or PDF file via the designated CloudDeakin assignment folder. Answers must be typed (11- or 12-point font, single spaced) into this worksheet; images that are pasted or inserted into the worksheet (except for the Results graph) will not be marked. All text answers must be able to be analysed by Turnitin.

2) Plagiarism and Collusion

Before submitting your worksheet to the Assignment folder, submit it to the Check Your Work: Turnitin Assignment Folder available on CloudDeakin. If we find that work is the result of plagiarism (from foreign source like the internet or a fellow or past student), or collusion, we report this to the Faculty Academic Progress and Discipline Committee.

Note: It is NOT sufficient to submit your worksheet only to the Turnitin Folder. Your worksheet will be marked only if you submit it to the appropriate (ie, your campus-designated) assignment folder.

3) Referencing

As all of the information for this report is derived from the unit materials, you do not need to supply any references.

Concept map of photosynthesis

Refer to the concept map on the following page to answer these questions. Provide answers in the space below

1. What is the chemical species that is transferred through the light reactions? (Box A) Answer:

2. What energy-rich compound is produced by the actions of the cytochrome complex? (Box B) Answer:

3. What is the gas (Box C) produced when electrons are stripped from water molecules and fed into photosystem II? Answer:

4. What energy is used to energise the light reactions? (Box D) Answer:

5. What is the substrate of the reaction that is occurring at NADP + reductase? (Box E) Answer:

6. Provide names for structures i and ii? (0.5 mark for each correct answer) Answer:

7. The electron-accepting dye, DCPIP, is the substrate of which part of the light reactions? Answer:

Introduction

In one paragraph (250 words or less) provide a brief introduction to the experiment described in Prac 4 Part II Investigation of the Photochemical Reactions of Photosynthesis (7.5 marks). Use the following description and questions and the concept map on the previous page to guide you. Provide an overview of photosynthesis by describing, in brief, the light and dark reactions. That is: what is the general process of the light reactions? Describe the products and by products of the light reactions and the general concept of the system. For which part of the system is DCPIP a substitute? What is synthesised by the dark reactions (Calvin cycle)? What products produced by the light reaction are required by the dark reactions?

Results

Using the data provided on the SLE132 site, produce a graph, using Excel, of absorbance of the experimental, dark controls and control samples against distance from the lamp. Include a suitable title, labelling of the x and y axes with appropriate units, and a figure legend. The scale on both the x and y axes should allow the reader to estimate values of the samples. Provide a figure legend (in the box, below your graph) that concisely (maximum 80 words) describes the graph that is shown and the experiment that underlies the measurements. A figure legend does not reproduce the entire experimental procedures in detail, but rather puts the shown result into an experimental context. (12 marks for graph, 5 marks for legend).

Conclusion

In one paragraph (300 words or less) provide a conclusion linking your observed trend of the experimental group with the functioning of the light reactions in plants. Explain how these results support your hypothesis. How does the amount of light received affect the light reactions of photosynthesis? Why does the absorbance in the experimental samples decrease with time?

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