It occurs in two steps: The light-trapping pigments used in oxygenic photosynthesis are chlorophyll A and B.
Technically, you would have to be green or, rather, your skin would have to contain chlorophyll—the substance that creates the green color in plants and some algae and protistans.
We just described a process that uses chlorophyll; does anyone know the name of that process? How does it do this? Well, inside the plant cells, a chemical reaction takes place that uses sunlight to turn water and carbon dioxide into glucose and oxygen.
The plant simply releases the oxygen, much in the same way that you and I breathe out carbon dioxide. The oxygen can then be breathed in by other organisms, like us! Plants and humans depend on each other by breathing in what others breathe out—precisely how most of the natural world works: It would be great if all of the products that engineers designed could produce such environmentally friendly and useful byproducts.
In fact, engineers work to design highly efficient products with and from! For example, mechanical and chemical engineers who are working on developing hydrogen fuel cell cars have designed the new technology to give off water as its only byproduct.
In addition, they are working to discover new means of fueling things, such as automobiles, and for heating and cooling systems for homes and buildings. Some engineers have employed the concept of biomimicry, whereby they attempt to model our designed energy systems after those that are naturally occurring, such as photosynthesis.
At this point, they undergo cellular respiration, which converts the glucose into ATP adenosine triphosphatewhich is the fundamental fuel of all living things. This chemical reaction takes place within the structure of the cell see Figure 2.
Chlorophyll, the green pigment of the plant, makes the conversion of energy from the sun to chemical energy possible. Interestingly, during this process, the plant will consume water and release oxygen, which many organisms need to survive. In turn, the algae are dependent on the decomposable matter waste from the brine flies for their own nutrients.
A high-energy phosphate molecule required to provide energy for cellular function. A secondary product of a given process. The process in which the chemical bonds of energy-rich molecules such as glucose are converted into energy usable for life processes. The process by which cells containing chlorophyll, such as green plants and algae, convert incident light to chemical energy; they create organic compounds from inorganic compounds, namely carbohydrates from carbon dioxide and water, accompanied by the simultaneous release of oxygen.
The process by which plants give off water vapor into the atmosphere. Associated Activities Corn for Fuel?! They use the result to inform decisions about designing a biofuels refinery. Lesson Closure Photosynthesis is a great example of a highly efficient biological process that is good for the environment.
Engineers can use a solid understanding of such biological processes to design more efficient and less environmentally damaging ways of meeting our needs.
Solicit, integrate and summarize student responses. Have you ever wondered how a plant eats? How do you think it gets its food?
Tell the students that in this lesson, we will learn about the chemical process that allows plants to make their own food. Post-Introduction Assessment Question and Answer: Ask students the answers to the following questions: What are the inputs for photosynthesis?
The students can also take part in posting parts of the process on the board. Lesson Summary Assessment Diagramming: Have students individually diagram the process of photosynthesis indicating inputs and outputs. If time permits, have them include this diagram in a food web, illustrating the sun's input and several levels of consumers that utilize the plant, not only as a producer of oxygen, but also as a direct food source; for example rabbits or mice and then foxes, etc.
References "Ecology of Gray's Reef.This lesson covers the process of photosynthesis and the related plant cell functions of transpiration and cellular respiration.
Students learn how engineers can view the natural process of photosynthesis as an exemplary model of a complex, yet efficient, process for converting solar energy to chemical energy or distributing water throughout a system. Photosynthesis.
Plants and photosynthetic algae and bacteria use energy from sunlight to combine carbon dioxide (C02) from the atmosphere with water (H2O) to form carbohydrates. These carbohydrates store energy. Oxygen (O2) is a byproduct that is released into the . The formula for photosynthesis is: 6 CO2 + 6 H2O → C6H12O6 + 6 O2 In words: Carbon dioxide + Water + Light energy → Glucose + Oxygen This is the most common formula used for photosynthesis.
In oxygenic photosynthesis, 2A is O2, whereas in anoxygenic photosynthesis, which occurs in some photosynthetic bacteria, the electron donor can be an inorganic hydrogen donor, such as H2S (in which case A is elemental sulfur) or an organic hydrogen donor such .
When the stomata are open, the plant can take in carbon dioxide from the air for photosynthesis and release oxygen (a byproduct of photosynthesis) back into the environment. In photosynthesis, reduction of carbon dioxide is incomplete. If we reduce CO 2 all the way to methane (an 8-electron reduction) both oxygen atoms are lost, and (in the simplest case) end up as water.