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Name: -Photosynthesis notes -Photosynthesis Leaf Disk Lab Cell Energy Exam Study Guide Study the following: -Cellular Respiration notes -Cellular Respiration Bean Lab 1. Fill in the appropriate information for each row. Type of cell(s) it occurs in? (Plant, animal, and/or bacterial?) Where in the cell does it occur? Purpose of the process? (Why does it occur in the cell?) Photosynthesis Plant, algae, & some bacteria Cellular Respiration All cells Chloroplast.. Light-dependent: Thylakoids Light-Independent: Stroma To transfer energy from the sun into glucose; to store energy; to make food Glycolysis: Cytoplasm Krebs: Matrix of Mitochondria ETC: Inner membrane of mitochondria To transfer energy from glucose into a usable form for the cell (ATP) 6CO2 + 6H2O C6H12O6 + 6O2 C6H12O6 + 6O2 6CO2 + 6H2O Yes No No Yes Light → Chemical Potential Chemical Potential Chemical Potential Reactants involved? Products produced? Removes carbon dioxide from the atmosphere (yes or no?) Adds carbon dioxide to the atmosphere (yes or no?) Overall energy transformation from beginning to end? 2. Based on the table above, write each term or statement in the correct part of the Venn diagram below. Photo. only: 6CO2 + 6H2O → C6H12O6 + 6O2 Occurs in chloroplasts Utilizes chlorophyll Produces oxygen Sunlight → Chemical Cell Resp. only: Occurs in animal cells Occurs in Mitochondria Produces carbon dioxide C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy Both CR & Photo: Occurs in plant cells, transfers energy for the cell Photosynthesis Cellular Respiration 3. Some people claim talking to plants can make them grow better. Given what you know about photosynthesis and respiration, why might a person talking/breathing very close to plant have an impact on its growth? When we breathe out, we are releasing carbon dioxide, which is a waste product from cellular respiration. Plants require carbon dioxide to go through photosynthesis, a process necessary for their survival in which they make their own food. Talking to plants provides them with carbon dioxide. 4. If plants produce oxygen as a result of photosynthesis, why aren’t oxygen levels continually increasing in the atmosphere? Organisms that go through aerobic cellular respiration take oxygen back out of the atmosphere. 5. Fill in the following chart about the stages of photosynthesis. Stage name Location in cell Goes In Comes Out (Produced) Light-dependent Chloroplast - Thylakoid 6H2O, light ATP, 6O2 Light-independent Chloroplast- Stroma 6CO2, ATP C6H12O6 6. Fill in the following chart about the stages of cellular respiration. Comes Out Stage Location in cell Goes In (Produced) Type of cell that can use this process Glycolysis Cytoplasm C6H12O6 2 pyruvate, 2 net ATP Prokaryotic & Eukaryotic Krebs Cycle Matrix of Mitochondria 2 pyruvate 6CO2, 2 ATP Eukaryotic ETC Inner membrane of mitochondria 6O2 6H2O, 32 ATP Eukaryotic 7. Explain the difference between chloroplasts and chlorophyll. The chloroplast is the ORGANELLE in which photosynthesis takes place. Chlorophyll is a pigment INSIDE the chloroplast that absorbs the light energy for photosynthesis. 8. What is fermentation? Why does it occur? Describe each type of fermentation and identify which type of organisms each type takes place in. Fermentation is an anaerobic process that allows glycolysis to continue making ATP in the absence of oxygen or mitochondria (prokaryotes). Lactic Acid - Takes place is some bacteria and animals, including human muscle cells when more oxygen is being used than is being taken in. Produces lactic acid and 2 net ATP. Alcoholic – takes place in bacteria and some yeast. Produces carbon dioxide, ethyl alcohol, and 2 net ATP. 9. Identify 3 factors that can affect the rate of photosynthesis, and explain how the rate of photosynthesis changes as each of these factors is increased. CO2 concentration: as it is increased, rate of photosynthesis increases until it eventually levels off. Light intensity: as it is increased, rate of photosynthesis increases until it eventually levels off. Temperature: as it is increased, rate of photosynthesis increases until it eventually peaks. At this point, it will begin to decrease again as temperature is increased further.