Explanation:
The effects of gamma radiation are investigated by studying plant germination, growth and development, and biochemical characteristics of maize. Maize dry seeds are exposed to a gamma source at doses ranging from 0.1 to 1 kGy. Our results show that the germination potential, expressed through the final germination percentage and the germination index, as well as the physiological parameters of maize seedlings (root and shoot lengths) decreased by increasing the irradiation dose. Moreover, plants derived from seeds exposed at higher doses did not survive more than 10 days. Biochemical differences based on photosynthetic pigment (chlorophyll a, chlorophyll b, carotenoids) content revealed an inversely proportional relationship to doses of exposure. Furthermore, the concentration of chlorophyll a was higher than chlorophyll b in both irradiated and non-irradiated seedlings. Electron spin resonance spectroscopy used to evaluate the amount of free radicals induced by gamma ray treatment demonstrates that the relative concentration of radiation-induced free radicals depends linearly on the absorbed
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Photosystem II is the first protein complex in oxygenic photosynthesis's light-dependent processes. It is found in plants, algae, and cyanobacteria's thylakoid membrane.
- The thylakoid membrane, which is a part of the chloroplast in plant cells, is where Photosystem I and Photosystem II are found.
- The products of the light dependent processes are delivered to the light independent reactions as ATP and NADPH.
- Water molecules are divided into oxygen atoms and hydrogen ions when photosystem II pulls replacement electrons from them.
- The thylakoid compartment retains the hydrogen ions from the water.
- High energy electrons are transferred from Photosystem II to Photosystem I in the electron transfer chain.
- The high-energy electrons in the photosystem received energy from sunlight while they were there.
- Photosystem I releases high-energy electrons into the atmosphere.
- The high energy electrons join NADP+ and a hydrogen ion after going via an electron transfer chain.
- ADP and Pi are combined to create ATP with the help of hydrogen ions passing via the ATP synthases.
So to conclude with we can say that the initial protein complex in the light dependent processes of oxygenic photosynthesis is called photosystem II. It may be found in plants, algae, and cyanobacteria's thylakoid membrane.
Learn more about photosystem II here:
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Well first you should radio all others on scene and explain what you saw and where you saw it.
