a definite relationship between the light intensity onto the leaf’s surface and the surface area of the leaf. Hypothesis I think the light intensity could affect the surface area in the following way: ·A higher light intensity could make the surface area of the leaf larger. The reason I think a higher light intensity could make the surface area larger is the fact that there would be a larger amount of chlorophyll‚ containing chloroplasts‚ for photosynthesis. By having leaves of a larger surface
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covers assessment criteria 5 and 6 The Photoelectric effect‚ and the Production of Light In 1887 Hertz discovered the photoelectric effect‚ where electrons were emitted from a zinc surface when illuminated with ultra-violet light. These electrons (called ‘photoelectrons’) were only emitted when the frequency of the ultra-violet light was above a certain value (called the ‘threshold frequency’). Criteria 5c Assume that ultra-violet light is falling onto a piece of zinc‚ and photoelectrons are
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Photosynthesis Experiment Introduction Photosynthesis is a process used by plants‚ making inorganic molecules into organic molecules (food) using sunlight. Carbon dioxide + Water (mainly from rain) Glucose + Oxygen From this process‚ carbon dioxide comes from environment. Glucose‚ as a product is used to make energy for growth. Lastly‚ the oxygen is a waste product in this chemical reaction‚ which become part of the Earth’s atmosphere. At this experiment‚ carbon dioxide and water
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Color is a common everyday factor that the vast majority of people have been exposed to since birth. In fact‚ the prevalence of color causes most people to not even give it a second thought. Humankind has lived with it since the beginning of time‚ and most never stop to question what it is or why it exists‚ but that is exactly the matter we should be asking ourselves. What is color? How would somebody even go about trying to explain the concept of color to a person who has never experienced it? The
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Introduction Photosynthesis is a redox reaction which requires carbon dioxide‚ water and light to produce water and a 6-carbon sugar. The process of photosynthesis consists of two parts‚ a light reaction and a light-independent reaction. The method of changing light energy into chemical energy for the formation of NADPH and ATP is done through the light reactions. Light independent reactions use carbon dioxide and the products of light reactions (ATP and NADPH) to form compounds such as glucose
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Photosynthesis review Short Answer 1. How do heterotrophs obtain energy? 2. What is ATP‚ and when is energy released from it? 3. Write the overall equation for photosynthesis in both symbols and words. 4. Photosystems I and II are both located in the thylakoid membrane. What advantage does their proximity provide? 5. What does the Calvin cycle do? 6. What is the difference between an autotroph and a heterotroph? Give an example of each type of organism. 7. Explain how heterotrophs
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6CO 2 + 12H 2 O + light → C 6 H 12 O 6 + 6O 2 + 6H 2 O Introduction: In this simulation‚ you will be looking at the production of carbon dioxide as a plant photosynthesizes. Oxygen is measured in the number of bubbles produced by the plant. Three factors that influence the rate of photosynthesis can be adjusted in the simulator to determine how each of the factors affects the rate of photosynthesis. Virtual Lab PreLab Questions Q: To survive‚ what gas do we need to breathe in
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that can effectively increase the rate of a reaction by lowering the required energy (activation energy) needed in order for the reaction to occur. The substrate must be specific to the active site because if they were
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Does Color Really Matter When It Comes to Auto Insurance? When you purchase auto insurance‚ there are a lot of factors your car insurance company considers when they quote you an insurance rate. For instance‚ they take into consideration your age‚ your driving record‚ and how far you drive to and from work. One school of thought that’s prevalent is that they also consider the color of your car. Auto Insurance Companies Are Color Blind The truth is‚ the color of your car doesn’t affect the rate you
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TITLE: Effect of the caffeine on the heart rate OBJECTIVE: To investigate the effect of the caffeine on the heart rate of living organisms. INTRODUCTION: * Daphnia Daphnia are small‚ planktonic crustaceans‚ between 0.2 and 5 mm in length. Daphnia are members of the order Cladocera‚ and are one of the several small aquatic crustaceans commonly called water fleas because of their saltatory swimming style (although fleas are insects and thus only very distantly related). They
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