Plant Energy Transformations-Photosynthesis - …
Cellular respiration is the process of breaking down food molecules to obtain energy and store it in the form of adenosine triphosphate (ATP) molecules.
Plant cells, after creating sugar molecules through photosynthesis, undergo cellular respiration to create ATP molecules.
the site of light-independent reactions of photosynthesis
Plant photosynthesis, both the Light Phase and Dark phasereactions, takes place in chloroplasts, which may be regarded asthe "power plants" of the green leaf cells. At night,when there is no sunlight energy, ATP continues to be generatedfor the plant's needs by respiration, i.e., oxidation of(photosynthetically produced) carbohydrate in mitochondria(similar to animals).
Plants provide us with the oxygen we breathe. Now that you know this tidbit of info, you may have a little better understanding of why environmentalists freak out over the rapid destruction of rainforests, wetlands, and natural habitat. The lower the number of plants on the planet, the less O2 produced for important things like, say…breathing.
The Third Stage of Photosynthesis The Final Stage ..
Inside mesophyll cells, chloroplasts are responsible for all of the reactions of photosynthesis. Chloroplasts are double-membraned organelles that house a third internal membrane called the . The thylakoid membrane is responsible for light absorption and the initial reactions of photosynthesis.
The final stage of photosynthesis during which sugar molecules ..
What exactly does the Calvin Cycle do?
The Calvin cycle uses both ATP molecules and high energy electrons carried by NADPH from the light dependent-reactions (thylakoids) to make G3P.
This process takes place all in the stoma
The Calvin Cycle is the second stage of photosynthesis.
Inside each chloroplast, the thylakoid membrane is extensively folded into a series of flattened sacs called . Because the thylakoid membrane is continuous, the thylakoid sacs are layered into rows and rows of stacks. Each stack is a (pl. grana). Inside each thylakoid is a fluid-filled area called the or . Surrounding the grana is the , a semi-fluid medium between the second and third membranes. Thylakoid membranes are packed with chlorophyll a and accessory pigments that absorb light energy to initiate photosynthesis. Extensive membrane folding and structure provides plenty of membrane space for pigment molecules to interact and absorb light energy.
This is done using light and the process is called photosynthesis
In a leaf’s interior are , packed with that perform photosynthesis. Mesophyll cells vary in structure and position, with some forming ordered layers while others are dispersed randomly. Dispersed mesophyll layers contain air pockets that create a “spongy” appearance and enhance gas exchange for photosynthesis. Each mesophyll cell typically contains more than forty chloroplasts. Throughout a typical leaf are , the circulatory system of a plant. A single vascular bundle, or vein, contains tubes that supply water from the plant’s roots up to the mesophyll cells and tubes that carry the sugars produced during photosynthesis to the rest of the plant.
Both ATP and NADPH will be used in the next stage of photosynthesis.
So we can summarize by saying that the photosynthetic plantstrap solar energy to form ATP and NADPH (Light Phase) and thenuse these as the energy source to make carbohydrates and otherbiomolecules from carbon dioxide and water (Dark Phase),simultaneously releasing oxygen in to the atmosphere. Thechemoheterotrophic animals reverse this process by using theoxygen to degrade the energy-rich organic products ofphotosynthesis to CO2 and water in order to generate ATP fortheir own synthesis of biomolecules.