Biology Week 4: Photosynthesis & Cellular Respiration

Day 1 - 3 | Day 4 | Lab | Review: Photo. & Resp. & Questions | Weekly Quiz | Quizstar

  • Photosynthesis
  • Sunlight
  • Water
  • Carbon dioxide
  • Oxygen
  • Stroma
  • Granum
  • Autotrophs
  • Fermentation
  • Aerobic
  • Mesophyll cells

 

  • Glucose
  • Biochemical pathway
  • Light reactions
  • Dark reactions
  • Calvin cycle
  • Chlorophyll
  • Thylakoid
  • Anaerobic
  • Krebs Cycle
  • Lactic acid
  • Roygbiv
  • Photosynthetic organisms

 

  • Photons
  • Chloroplast
  • Reaction center
  • Cellular respiration
  • Light spectrum
  • ATP
  • ADP
  • NADPH
  • Respiration
  • Glycolysis
  • Electron transport chain

 

Photosynthesis:
the chemical process by which green plants use light energy to produce food.

click to find the answer to today's question

What is the least important color of light in photosynthesis?

the process of photosynthesisThe process by which green plants use sunlight energy to convert water & carbon dioxide into oxygen & glucose is the basis for virtually all life. Sugars, the first products of photosynthesis, are converted into starch, protein, cellulose, and thousands of other chemical compounds.

Check out this link                        for information on the light Photosynthesis uses.

 

Photosynthesis is also the source of the oxygen which we breathe. Before plants appeared, the earth's atmosphere was high in carbon dioxide but contained no oxygen. The present atmosphere, by comparison, is about 0.035% carbon dioxide and 21% oxygen - thanks to photosynthesis.

Photosynthesis link to an Internet Websiteis actually a complex series of chemical reactions. There are many such series in living things known as biochemical pathways. While all these chemical systems are important, none are more important than photosynthesis and respiration.

the key points to useful information on this page
Photosynthesis can be simplified into two reactants (carbon dioxide and water) and two products (glucose and oxygen), represented by the chemical equation:

6CO2 (g) + 6H2O (l) C6H12O6 (aq) + 6O2 (g)

The letter subscripts in the equation represent the physical state of each substance:

(g) - gas
(l) - liquid
(aq) - aqueous (dissolved in water)

 

 

 

 

 

 

 

 

 

 

Still feeling a little “Green”

For more details about the process of photosynthesis go here.link to a local webpage

Click on this leaf                        to take a journey through the light reaction. Don’t forget the                 Calvin cycle.

 

Cellular respiration:link to a local webpage food molecules are broken down to release the energy in their chemical bonds.

Even though glucose is a source of energy for living things, Adenosine triphosphate, ATP, is the energy molecule used by most organisms. Energy is released when ATP is changed to ADP. This energy is available for cells to carry on their life processes.

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Landscaping

Chemically, cellular respiration is the exact opposite of photosynthesis. While photosynthesis occurs only in some cells, respiration occurs in all cells.

The energy sequence in living cells goes something like this:

Photosynthesis stores energy in chemical compounds
Respiration releases this energy
The freed energy forms ATP
The energy from the breakdown of ATP fuels cell activity

 

Day 1-3 Computer Assignment - Photosynthesis & Cellular Respiration
This assignment must be completed by the end of class day after tomorrow to receive credit.

Evaluation Rubric is located below each research group segment

Regular Biology: Before you begin Watch this online video on Photosynthesis and complete the quiz at the end. (right click on the video and "save target as" to desk top then watch video from desk top)

Honors Biology: Before you begin visit this site link to an Internet Websiteread and complete each concept. Complete the self-quiz with a score of 100%

PowerPoint is a "presentation graphics" program. It is used to visually provide information to a group of people - not just one person sitting in front of a computer. Color combinations and font size must make the slides easily read from a distance.

  1. Make a PowerPoint presentation dealing with photosynthesis. Each student will be part of a research team assigned to become experts on photosynthesis in one of the 3 areas listed below. Each group will work together to put what they have learned into a presentation which the group will use to teach the class about their topic. The requirements below are provided as a minimum standard. Feel free to make a more sophisticated slide show if you wish (higher scores can be earned by adding items like music, animation and video, etc). Slides should follow the order from top to bottom list below: (If needed add more slides to adequately cover each topic)

 

Research group 1 (chemical formula, Connection to cellular respiration, light)

 

1. Slide 1 - Title page including:

·         title of presentation - should catch the audiences attention

·         a picture related to the topic of the presentation

·         also include the following on this slide:

·   your name or names

·   class period

·   date

 

2. Slides 1-2 - An introduction slide showing what you will be presenting and how it is related to photosynthesis.

·        include some type of graphics on this slide

 

3. Slides 1-2 - The Chemical formula for Photosynthesis (label-reactants & products).

·         include some type of graphics related to slide topic

 

4. Slides 1-3 - How is photosynthesis related/connected to cellular respiration and the energy animals obtain? (Is there a connection here, compare the two chemical equations)?

·         How does a plant store the energy (organic compounds)?

·         Energy sequence in cells

·         Do plants perform cellular respiration?

·         include some type of graphic related to slide topic

 

5. Slides 1-4 - Light absorption, colors used by plants (why are most plants green?)

·         roygbiv, how is it used by plants

·         Engelmann experiment can be used

·         types of chlorophyll

·         name the different types of plant pigments and their use in photosynthesis

·         include some type of graphics (graph)

 

6. Slides 1-2  A slide indicating the conclusion for the presentation

·        reviews how topic is related to photosynthesis

 

7. Slide 1  A bibliography/work cited slide. Cite correctly: not just URL

 

 

* Use this rubric link to a local webpage  to evaluate this presentation on photosynthesis.

 

 

 

Research group 2 ( leaf structure and location of photosynthesis)

 

1. Slide 1 - Title page including:

·         title of presentation - should catch the audiences attention

·         a picture related to the topic of the presentation

·         also include the following on this slide:

·   your name or names

·   class period

·   date

 

2. Slides 1-2  An introduction slide showing what you will be presenting and how it is related to photosynthesis.

·         include some type of graphics on this slide

 

3. Slides 1-2 What type of organisms can perform photosynthesis

·        give a list or graphic or percent by each

·        which is biggest producer of photosynthetic byproducts. Why?

·        include a related graphic

 

4. Slides  1-6  Structures in plants related to photosynthesis

·         leaf, stomata, type of cells (mesophyll), chloroplast, chloroplast membrane, stroma, granum, thylakoid (stacks), epidermis, cuticle

·         identify the photosynthetic processes taking place in each part , dark reaction take place in the ______.

·         include graphics

 

5. Slides 1-3 Factors determining the rate of photosynthesis (environmental)

·        include a graphic

 

6. Slides 1-2  A slide indicating the conclusion for the presentation

·        reviews how topic is related to photosynthesis

 

7. Slide 1  A bibliography/work cited slide. Cite correctly: not just URL

 

 

* Use this rubric link to a local webpage  to evaluate this presentation on photosynthesis.

 

 

Research group 3 (converting light energy to chemical energy)

 

1. Slide 1 - Title page including:

·         title of presentation - should catch the audiences attention

·         a picture related to the topic of the presentation

·         also include the following on this slide:

·   your name or names

·   class period

·   date

 

2. Slides 1-2 - An introduction slide showing what you will be presenting and how it is related to photosynthesis.

·        include some type of graphics on this slide

 

3. Slides 1-8 - How does a plant convert light energy into chemical energy

·         What is photosystems II & I (light reaction)? How do they function? How does a concentration gradient play into this? Electron transport chain (ETC)

·         What are the products of the light reaction?

·         Describe function of  the dark reactions (Calvin cycle),

·         How are these molecules involved: (ATP, ADP, NADP+, NADPH) sugars, carbon, electrons.

·         What are the products of the dark reaction?

·         Where are these items found?

·         How are the light and dark reactions linked together?

·         include graphics

 

4. Slides 1-3  Photosynthetic efficiency: How efficient is photosynthesis?

·        Is it more efficient then a car engine?

·        Do any factors change the efficiency? (type of light?)

·        include a graphic

 

5. Slides 1-2  A slide indicating the conclusion for the presentation

·        reviews how topic is related to photosynthesis

 

6. Slide 1  A bibliography/work cited slide. Cite correctly: not just URL

 

 

* Use this rubric link to a local webpage  to evaluate this presentation on photosynthesis.

 

 

 

Honors biology: the following option is required

Extra credit can be earned by setting your power point to run on its own once started, allowing you to read/present (and the audience) your presentation without long pauses or going to fast. *Warning* practice makes perfect: Setting the timing and slide transitions may run different on computers with different power point versions such as power point 2000 and power point 2003 (always save the power point in windows 2000 version as that is what our school currently runs).


Important: Use scoring rubric to self evaluate power point.

Presentation day:

  • Presentation saved to disk and server file for access in the classroom (always have a backup).
  • Bring a hard copy of presentation: handout view (6 slides to a page format) and self evaluated scoring rubric stapled together with the rubric on top.

Research Links:

Biology Class

 

 

 

 

 

 

 

   

 

Green is the least important color of light in photosynthesis.
The pigment chlorophyll abosrbs all colors of light except green. Plants look green because that color of light is reflected, not absorbed and used.

Red and blue light seem to provide the most energy for photosynthesis since they are the most completely absorbed.