Photosynthesis
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- Опубліковано 31 жов 2017
- Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities (energy transformation). This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water - hence the name photosynthesis.
In most cases, oxygen is also released as a waste product. Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies all of the organic compounds and most of the energy necessary for life on Earth.
In plants, algae and cyanobacteria, long-term energy storage in the form of sugars is produced by a subsequent sequence of light-independent reactions called the Calvin cycle; some bacteria use different mechanisms, such as the reverse Krebs cycle, to achieve the same end. In the Calvin cycle, atmospheric carbon dioxide is incorporated into already existing organic carbon compounds, such as ribulose bisphosphate (RuBP).Using the ATP and NADPH produced by the light-dependent reactions, the resulting compounds are then reduced and removed to form further carbohydrates, such as glucose.
Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
Site of Photosynthesis is in Chloroplasts.
Light Reactions in Thylakoid Membrane
Calvin Cycle in Stroma
it was really marvellous.with much explaination....
Thanks Musharraf for appreciation...
Allah Pak apko kamiyab karay ameen sum ameen
Allah Aap ko b kamiyab karay. Ameeennnnn
Nice explain Sir 👍👍👍👍👍
Superb sir
we are very much grateful for your kindness and for making this course easy
thanks for appreciation..Glad it helps....✌️
Dos plants store carbohydrates? If I was to feed my plants molasses, which is a source of carbohydrates.
would you feed it throughout the life of the plant or just in the vegetive stage.
My degree is agricultural science still like to WATCHING of this video
thanks Samaale for appreciation....
Thanks sir....... 🙏😇
Very nice
Thanks Sumaira for appreciation...... Glad to know that it helps.
Best explaination
sir your classes are helpful than any other channels.keep going sir .thank you.i don't know why the views are less even though it's really effective?
thanks for appreciation.... yes views are less
Great
Very nice analysis sir
Thanks bro.......
If photolysis process does not occur ... So , does the ATP will be produced ... ?
Wonderful 👌 Are these lectures helpful for CSIR NET??
Thanks for appreciation..
Yes these lectures are for CSIR
Nice sir g
What is photosynthesis waste products?
Hello sir... Is light dependent reaction is also called photophosphorylation and oxygenic photosynthesis?
Photophosphorylation : Phosphorylation due to light....
And here it is the adding of Phosphate to the ADP thereby creating ATP:
That process is the Photo Phosphorylation.
Since ATPs are produced in Light Dependent Rxns so we can say it is the PhotoPhosphorylation ....
Ok sir thank you
Thankuu sir
Sum ameen
Thankss
You are welcome
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Baramulla
Sir I wanted to know one thing about biological classification chapter i,e; in ncert there is line "kingdom protista brought together chlamydomonas and chlorella with paramoecium and amoeba . It means chlamydomonas belongs to protista . But in plant kingdom chapter chlamydomonas is an example of algae i,e; plantae.I was bit confused about this sir can you please clear this confusion sir. I didn't found biological classification chapter video sir so I commented here.
Actually we still read read Chlamydomonas under Alage but Whittaker has classified it under Protista......
For Botanists it is Algae and for Zoologists its is Protista...😁
Ok sir thank you
ده لكلية العلوم 😢
yes