Скачать или смотреть 🌱Photosynthesis Lab Simulation and Study Guide

These sources describe an interactive JavaScript HTML5 applet simulation model designed for primary school students to learn about factors affecting photosynthesis. Developed by [email protected], Francisco Esquembre, and Félix J. García Clemente, and hosted by Open Educational Resources / Open Source Physics @ Singapore, the simulation allows users to experiment with variables like light intensity and carbon dioxide concentration. Students can observe the rate of oxygen bubble production as a measure of photosynthesis and are guided through data collection, graph plotting, and analysis to understand core concepts and limiting factors. The resource also includes supporting videos, quizzes, and essay questions to enhance the learning experience, offering a practical digital alternative to challenging real-world lab experiments.

Photosynthesis Study Guide
Quiz
Instructions: Answer the following questions in 2-3 sentences each, based on the information provided in the source material.
1. What is the primary purpose of photosynthesis for a plant?
2. Identify the raw materials required for photosynthesis and the products that result from the process.
3. What specific role does chlorophyll play in photosynthesis?
4. How is the rate of photosynthesis measured within the described simulation?
5. Describe the light-dependent stage of photosynthesis.
6. According to the simulation's first experiment, what is the relationship between light intensity and the rate of photosynthesis?
7. Based on the second experiment, what happens to the rate of photosynthesis when the concentration of dissolved carbon dioxide exceeds 0.15%?
8. Explain the concept of a "limiting factor" as it relates to photosynthesis.

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Answer Key
1. The primary purpose of photosynthesis is for plants to produce their own food in the form of sugar (glucose). This food provides the necessary energy for plants to carry out essential life processes, such as growing. Unlike animals, plants do not consume food; they create it through this process.
2. The raw materials required for photosynthesis are water (H2O) and carbon dioxide (CO2). The process, powered by light energy, produces sugar (glucose, C6H12O6) as food for the plant and releases oxygen (O2) as a byproduct.
3. Chlorophyll is the green pigment in plant leaves that is essential for trapping light energy. This captured energy is then converted into chemical energy and used to power the chemical reactions of photosynthesis, specifically combining water and carbon dioxide to create sugar.
4. In the simulation, the rate of photosynthesis is measured by observing and counting the number of oxygen bubbles produced by the plant per minute. The simulation's learning goal states that by measuring the rate at which bubbles are produced, it is possible to determine how fast the plant is photosynthesizing.
5. The light-dependent stage is the first of two stages in photosynthesis. During this stage, light energy is absorbed by chlorophyll and converted to chemical energy. This energy is then used to split water molecules into oxygen and hydrogen in a process known as the photolysis of water.
6. The simulation shows that as light intensity increases from 0 to 4 units, the rate of photosynthesis also increases. However, when the light intensity is more than 4 units, the rate of photosynthesis plateaus, indicating that another factor has become limiting.
7. The rate of photosynthesis increases as the carbon dioxide concentration rises from 0% to 0.15%. Beyond 0.15%, increasing the concentration of carbon dioxide no longer increases the rate of photosynthesis, and the rate levels off. This suggests that carbon dioxide is no longer the limiting factor.
8. A limiting factor is a resource or environmental condition that restricts the rate of a process, even if other necessary resources are abundant. In photosynthesis, if light intensity or carbon dioxide is in short supply, it will limit the overall rate, regardless of how much of the other resource is available.
Primary School
https://sg.iwant2study.org/ospsg/inde...
https://iwant2study.org/lookangejss/b...

With curve fitting
https://sg.iwant2study.org/ospsg/inde...
https://iwant2study.org/lookangejss/b...

for Secondary school
https://sg.iwant2study.org/ospsg/inde...
https://iwant2study.org/lookangejss/b...