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Cellular respiration

Cellular Respiration cycle study giuide

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STUDY GUIDE FOR CELLULAR RESPIRATION Cellular Respiration: Transfer of energy from organic compounds (especially GLUCOSE) to ATP. AEROBIC: cellular respiration WITH O2 ANEROBIC: cellular respiration WITHOUT O2 TWO STAGES OF CELLULAR RESPIRATION: STAGE 1: Glucose is converted to Pyruvate producing small amounts of ATP and NADH. STAGE 2: If O2, then: PYR and NADH make lots of ATP; if no O2, then Lactate or Ethanol and CO2 are produced. SEE FIGURE 10 FROM PAGE 104 IIN THE TEXTBOOK.

Cellular Respiration

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Cellular respiration is a cycle that occurs in both plant and animal cells. However, note that it does not occur in prokaryotic cells for they lack organelles. The first stage of cell respiration takes place outside the mitochondria and is called glycolosis. Here, glucose is converted to two pyruvates. Then through the Krebs Citric Acid Cycle, the pyruvate is changed to Acetyl-CoA and creates more ATP. Finally, the electron chain results in hydrogen ions being pumped out and then forced to diffuse back and in doing so, produce ATP through facilitated diffusion. In this manner, eukaryotic cells create ATP to power their cells.

Photosynthesis

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Chapter 10?? Photosynthesis Objectives The Process That Feeds the Biosphere ?1. Distinguish between autotrophic and heterotrophic nutrition. ?2. Distinguish between photoautotrophs and chemoautotrophs. ?3. Describe the structure of a chloroplast, listing all membranes and compartments. The Pathways of Photosynthesis ?4. Write a summary equation for photosynthesis. ?5. Explain van Niel's hypothesis and describe how it contributed to our current understanding of photosynthesis. Explain the evidence that supported his hypothesis. ?6. In general terms, explain the role of redox reactions in photosynthesis. ?7. Describe the two main stages of photosynthesis in general terms.

What's on the AP Exam

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I. Molecules and Cells 25%

-Chemistry 7%

-Cells 6%

-Photosynthesis 4%

-Respiration 4%

-Cell Division 4%

II. Genetics and Evolution 25%

-Heredity

-Molecular Genetics 9%

-Evolution 8%

III. Organisms and Populations

-Five Kingdom Survey 8%

-Plants 12%

-Animal Structure and Function 10%

-Animal Reproduction and Development 6%

-Animal Behavior 4%

-Ecology 10%

Lab #4 Plant Pigments and Photosynthesis - Questions

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Lab #4 Plant Pigments and Photosynthesis Exercise 4A: Plant Pigment Chromatography Topics of Discussion 1) What factors are involved in the separation of the pigments? 2) Would you expect the Rf value of a pigment to be the same if a different solvent were used? Explain. 3) What type of chlorophyll does the reaction center contain? What are the roles of the other pigments? Exercise 4B: Photosynthesis / The Light Reaction Topics of Discussion 1) What is the function of DPIP in this experiment? 2) What molecule found in chloroplasts does DPIP ?replace? in this experiment? 3) What is the source of the electrons that will reduce DPIP? 4) What was measured with the spectrophotometer in this experiment? 5) What is the effect of darkness on the reduction of DPIP? Explain.

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