Unit_2_Summary_Metab..

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Unit #2 Summary: Metabolic Processes

Big Ideas

- All metabolic processes involve chemical changes and energy conversions.

- An understanding of metabolic processes enables people to make informed choices with respect to a range of personal, societal, and environmental issues.

Topic What do you Resources need to know?

Cellular Respiration

Glycolysis

Krebs Cycle

Electron Transport Chain

Energy carriers

ATP synthase

Oxidative phosphorylation

Chemiosmosis

Proton pump

- Explain the chemical and energy conversions associated with aerobic and anaerobic respiration

- Lab: Student and Teacher Copy Cellular Respiration in plants

Note : Keep in mind that a green plant RESPIRES all the time, day and night. However, it PHOTOSYNTHESIZES only in the presence of sunlight. Why is this?

- Note : Metabolism (Password Protected)

- Note : Cellular Respiration (Password Protected)

- Videos : Cellular Respiration videos by Khan Academy

- Animation : Glycolysis

Photosynthesis

Photolysis

Calvin cycle

Light and dark reactions

Cyclic and non-cyclic phosphorylation

- Animation : Krebs Cycle

- Animation : Electron Transport Chain

- Video : Cellular Respiration and the steps of the

Electron Transport Chain C3. Understanding Basic

- Animation : Cyclic and Non-Cyclic Phosphorylation

- Animation : Proton Pump

- Note : How does ATP provide energy?

- Explain the chemical and energy conversions associated with photosynthesis

- Note : Photosynthesis (Password Protected)

Videos : Photosynthesis videos by Khan Academy

Video : Photosynthesis: Light Reactions 1

Law of thermodynamics

- Explain how it relates to energy transfer in cellular respiration and photosynthesis

Video : Photosynthesis: Calvin Cycle

- Animation : Photosynthetic, ETC and ATP Synthesis

- Animation : A good animation of the Photosystem I and II

- Animation : Calvin Cycle (Dark Cycle)

- Animation : Phloem loading

- Lab: Now that we have studied both the Light and

Dark reactions of Photosynthesis, consider the following points of information:

- Light reactions require light and therefore happen during the day

- Dark (Calvin Cycle) reactions happen in the absence of light

- It is during the Dark (Calvin Cycle) reaction that sugars are actually formed

- These sugars are needed by the plant to grow, heal, reproduce, and ultimately for their survival

Therefore, my question to you is:

Will a plant’s growth be NEGATIVELY affected by too much exposure to light as a result of never entering into the Dark Cycle and therefore never being able to produce the sugars that are necessary for survival?

- Note : Laws of Thermodynamics (Password Protected)

Tutorial Questions

1. How do symbiotic bacteria use metabolic processes to produce biohydrogen from food waste?

2. How are microbes used in the bioremediation of contaminated groundwater sites?

3. What is the relationship between the position of a particular species in the food chain and the energy required to maintain that species?

4. How does stem-cell research related to degenerative diseases use technologies to change the metabolic processes of the cells?

5. Why is it important when changing your diet to know how the cells in your body will react to the introduction of new substances or the removal of other substances? (eg. What are the breakdown products of aspartame?)

6.

What happens to the sugar that is created during the Dark Cycle (Calvin Cycle)?

7.

Why do plants need to create glucose to store the sun's energy as ATP if they just break down the glucose to create ATP during cellular respiration, why don't they just use the ATP from the Light Cycle

Directly?

8. Do plants carry out cellular respiration AND photosynthesis?

9. Draw a graph of what you think the carbon dioxide output of a typical plant would be over a 24 hour period if you were able to capture all of the gas released from a plant.

(Assume that sunrise 7:00 am and sunset is at 7:00 pm)

10. Create a detailed flowchart that displays what happens to the glucose (and its stored energy) that is created during the Dark Cycle (Calvin Cycle) of Photosynthesis? Your answer should explain the possible fate of glucose throughout an entire food chain, from producers to carnivores.

11. Explain how an understanding of metabolic processes (eg. Cellular respiration, photosynthesis) can help humans to develop new ways of producing useful compounds or dealing with the ever increasing amount of waste and contamination that we are producing.

12. You would like to promote healthy eating in your community and would like to start a small business selling bean sprouts by the gram. You want to keep electricity costs down so you plan to germinate the seeds in the dark. Explain what would happen over the course of a four week period if you put 5 g of bean seeds in a dark room with some water but no light. (Assume that the plants have germinated and are still alive)

Suggested points to discuss are: the taste of the sprouts, the initial and final mass of the sprouts, the health of the sprouts, the size (height) of the sprouts, the metabolic and cellular processes of the sprout cells

Photosynthesis and Cellular Respiration Diagrams

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