Explain how photosynthesis and cellular respiration are linked within ecosystems

Once the electron is displaced from the photosystem, the electron is passed down the electron acceptor molecules and returns to photosystem I, from where it was emitted, hence the name cyclic reaction. And third, students people need opportunities to apply what they have learned to new situations, to check the completeness of their understanding, and to evaluate their own learning for themselves.

The fixation or reduction of carbon dioxide is a process in which carbon dioxide combines with a five-carbon sugar, ribulose 1,5-bisphosphateto yield two molecules of a three-carbon compound, glycerate 3-phosphatealso known as 3-phosphoglycerate.

In fact they are both very complex and dissimilar processes. The light-dependent reactions are of two forms: Respiration is where the plant takes in oxygen and releases carbon dioxide to the surroundings. Determine what part energy plays in both processes.

The oxygen exits through the stomata on the leaves and into the air.

Photosynthesis and Cellular Respiration - Complete 5E Lesson Bundle

After this happens, oxygen is released back into the air. Second, students people must be actively involved in the process of teaching and learning, comparing new information to previous ideas, constructing new understandings, and quite simply changing their own minds about how the world works.

Its production leaves chlorophyll in photosystem I with a deficit of electrons chlorophyll has been oxidizedwhich must be balanced by some other reducing agent that will supply the missing electron.

This is the source of the O2 we breathe, and thus, a significant factor in the concerns about deforestation. It takes in the mitochondria, which the powerhouse of the cell. Photosynthesis generates organic molecules and oxygen used by the mitochondria of eukaryotes for the process of cellular respiration.

It takes place in the chloroplast. Carbon concentrating mechanisms Overview of C4 carbon fixation In hot and dry conditions, plants close their stomata to prevent water loss.

The antenna system is at the core of the chlorophyll molecule of the photosystem II reaction center. In such proteins, the pigments are arranged to work together.

Photosynthesis needs energy from the light in order to start the whole process. Photosynthesis Photosynthesis is the process through which plants make food for themselves in form of glucose.

The theoretical maximum yield of cellular respiration is 36 ATP per molecule of glucose metabolized. The source of electrons in green-plant and cyanobacterial photosynthesis is water.

Engagement Phase - This could involve a short video with probing question or a discussion based around current events, common misconceptions, etc. Photosynthesis occurs in presence of sun light whereas respiration always and require no light but air.

The excited electrons lost from chlorophyll from photosystem I are supplied from the electron transport chain by plastocyanin. The main function of photosynthesis is to produce food and it captures energy for it to perform the process while respiration breakdowns food and it releases energy in the process.

The Link between Photosynthesis and Cellular Respiration

Decarboxylation of malate during the day releases CO2 inside the leaves, thus allowing carbon fixation to 3-phosphoglycerate by RuBisCO. In addition to the energy released, the products of the reaction are carbon dioxide and water.

Energy enters an ecosystem in the form of sunlight and exists as heat. In photosynthesis, the electron flow is reversed, the water is split not formedand the electrons are transferred from the water to CO2 and in the process the energy is used to reduce the CO2 into sugar.

Besides chlorophyll, plants also use pigments such as carotenes and xanthophylls. In respiration energy is released from sugars when electrons associated with hydrogen are transported to oxygen the electron acceptorand water is formed as a byproduct.

Light-dependent reactions Main article: Photodissociation and Oxygen evolution The NADPH is the main reducing agent produced by chloroplasts, which then goes on to provide a source of energetic electrons in other cellular reactions.

There it is further excited by the light absorbed by that photosystem. The green part of the light spectrum is not absorbed but is reflected which is the reason that most plants have a green color. The cells in the interior tissues of a leaf, called the mesophyllcan contain betweenandchloroplasts for every square millimeter of leaf.

Both involve a type of organelle inside the cells, but photosynthesis takes place inside the chloroplasts, which contain chlorophyll.

Two water molecules are oxidized by four successive charge-separation reactions by photosystem II to yield a molecule of diatomic oxygen and four hydrogen ions; the electrons yielded are transferred to a redox-active tyrosine residue that then reduces the oxidized chlorophyll a called P that serves as the primary light-driven electron donor in the photosystem II reaction center.

The stomates are holes which occur primarily in the lower epidermis and are for air exchange:Photosynthesis is very important for our biosphere. Photosynthetic plants convert solar energy into the chemical energy and that stored chemical energy flows into herbivores, predators, parasites, decomposers, and all other forms of life.

In general outline, photosynthesis is the opposite of cellular respiration: while photosyntesis is a process of reduction of carbon dioxide to carbohydrate, cellular respiration is the oxidation of carbohydrate or other nutrients to carbon dioxide.

Nutrients used in cellular respiration include carbohydrates, amino acids and fatty acids. The lesson is vertically aligned to review classification of organisms, taxonomy, and build from related introductory activities into learning about cell types, organelles and their structures, and functions, with an emphasis on the chloroplast and the mitochondrion and their role in photosynthesis and cellular respiration.

Oxygen produced during photosynthesis replenishes the oxygen that was used up by living things during respiration mouseover the above picture for more information on respiration.


This cycle of photosynthesis and respiration maintains the balance of carbon dioxide and oxygen on earth. Photosynthesis generates organic molecules and oxygen used by the mitochondria of eukaryotes for the process of cellular respiration.

Respiration breaks this. 64 I can explain how photosynthesis stores energy and cellular respiration releases energy. Photosynthesis stores energy captured from the sun in bonds of glucose.

Cellular respiration breaks down the glucose and releases the energy stored within it.

Explain how photosynthesis and cellular respiration are linked within ecosystems
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