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Photosynthesis usually refers to oxygenic photosynthesis, a process that produces oxygen. Photosynthetic organisms store the chemical energy so produced within intracellular organic compounds (compounds containing carbon) like sugars, glycogen , cellulose and starches .
Oxygenic photosynthesis can be performed by plants and cyanobacteria; cyanobacteria are believed to be the progenitors of the photosystem-containing chloroplasts of eukaryotes. Photosynthetic bacteria that cannot produce oxygen have only one photosystem, which is similar to either PSI or PSII .
Jason Lindsey aka "Mr. Science" is a science teacher, author, meteorologist, and one of only seven STEM-Certified Master Trainers in the US.. [1] Lindsey produces and hosts a popular television segment called Hooked on Science.
Cyanobacteria is the only prokaryotic group that performs oxygenic photosynthesis. Anoxygenic photosynthetic bacteria use PSI- and PSII-like photosystems, which are pigment protein complexes for capturing light. [5] Both of these photosystems use bacteriochlorophyll. There are multiple hypotheses for how oxygenic photosynthesis evolved.
This is one of two core processes in photosynthesis, and it occurs with astonishing efficiency (greater than 90%) because, in addition to direct excitation by light at 680 nm, the energy of light first harvested by antenna proteins at other wavelengths in the light-harvesting system is also transferred to these special chlorophyll molecules.
Sixth grade science teacher Leigh Madigan creates pinhole viewers out of cereal boxes with her students to safely view the partial solar eclipse in April at Toms River Intermediate North in Toms ...
Skype a Scientist is a nonprofit educational organization based in Philadelphia, Pennsylvania, [5] that enables scientists to video conference with students in classrooms. It began as an informal program in 2017, founded by Sarah McAnulty while she was a graduate student at the University of Connecticut.
3. Medications. Some medications have been associated with temporary hair loss. Most of the time hair loss related to medication is due to the drug disrupting the hair growth cycle leading to a ...
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