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What is photosynthesis? - eschooltoday
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Meanwhile, Redding and his team have just begun artificially converting the symmetric reaction center of heliobacteria into an asymmetrical one, following in the footsteps of two researchers in Japan, Hirozo Oh-Oka of Osaka University and Chihiro Azai of Ritsumeikan University, who have spent more than a decade doing this in another type of photosynthetic bacterium. The groups believe their work will clarify how these adaptations would have occurred in real life in the distant past.
Why is respiration important to life on Earth? | Yahoo Answers
This is only a partial answer as it doesn't explain why the excess of O2 stayed but one thing you have to appreciate is the fact that aerobic respiration appeared almost half a billion years after photosynthesis, so we can't really say that photosynthesis and respiration have always balanced each other.
"There are two known natural ways of producing oxygen: by UV dissociation of H2O and by photosynthesis. In the ECM, the former process was initially much more efficient than at present because of the huge amount of water vapour and of the greater intensity of UV radiation occurring then. The biological production of oxygen would have been important during the Archean, which ended at 2.5 Ga, therefore earlier than the GOE. The usual approach is to consider that the biologically produced oxygen was first combined with dissolved iron in oceans and only significantly released to the atmosphere later – a way to explain the delay between the presumed time of the biological production of oxygen and the rise of its atmospheric level. Here, there is no need to consider a delay – the biologically produced oxygen was dissolved in water and absorbed by the huge atmosphere without significantly changing its composition; the oxygen level increased only when the atmosphere significantly decreased due to the condensation of water vapour. One can now consider that oxygen was produced in large amounts since the beginning, first from UV dissociation, at a rate that decreased over time, and very soon followed by biological production. In this case, there was an important amount of free oxygen in the atmosphere long before its atmospheric level started to increase significantly; and some potential evidences of it can be identified (for a review see Yamaguchi, 2005)."
Why are photosynthesis and respiration important for ..
Essential fatty acids that we can't make on our own but plants do make.
How Does The Survival Of The Earth Depend on Photosynthesis?
Photosynthesis utilizes carbon dioxide and water in a process that releases oxygen.
Helps maintain a normal levels of carbon dioxide in the atmosphere
By: Shelby-Rae Kubashek
What is the balance between photosynthesis and cellular respiration?
It captures light energy and converts it to chemical energy
solar energy is converted to chemical energy
Production Of Carbohydrate By Plants
turns carbon dioxide and water into sugar
cellular respiration- glucose is ultimately broken down to yield carbon dioxide and water
What does photosynthesis make?
the ultimate source of all calories all living things consume is photosynthesis
Photosynthesis is the ultimate source of all the carbon that is stored in organic compounds in all living matters
How Do Humans Threaten The Balance Between Photosynthesis And Cellular Respiration?
If plants get too much carbon dioxide that will produce more oxygen which takes more energy and will cause them to need even more water, sunlight and carbon dioxide to produce their energy as for humans the pollution will be too much for us to stay healthy and have clean air.
Humans and most multi-cellular organisms are mainly limited to transferring genetic material vertically — that is, from parent to offspring. However, among many single-celled organisms, horizontal transfer — sharing genetic material directly with another, coexisting member of your own or another — is commonplace. The new genetic material may then be incorporated into the recipient's genome and passed on to its offspring. This process is part of what allows microorganisms to evolve so quickly today — for example, in the rapid evolution of resistance to new antibiotics. Scientists think that horizontal transfer also occurred frequently during the early evolution of life and explains why so many distantly related bacterial lineages can photosynthesize: the genes coding for these processes were passed directly from lineage to lineage, and when the genes were successfully picked up, incorporated into a lineage's genome, and deployed, that lineage was likely favored by . Being able to get energy from the sun probably offered a significant survival advantage!
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Why is photosynthesis important to all life …
Photosynthesis is a process used by plants and other organisms to convert light energy into 1 Overview; 2 Photosynthetic membranes and organelles; 3 Light-dependent reactions A collection of photosynthesis pages for all levels from a renowned expert (Govindjee) Â· In depth, advanced treatment of photosynthesis,Â FEATURE ESSAY 2.1 C4 photosynthesis | Plants in Action Figure 1 Dr M.D (Hal) Hatch, FAA, FRS, primary discoverer of C4 photosynthesis.
What is the importance of photosynthesis in an …
Living things that can make their own food—autotrophs—are the basis for all food webs. On land the most important autotrophs are plants; in the ocean, the major autotrophs are phytoplankton: microscopic algae, bacteria, and protists that use chlorophyll and other light-harvesting pigments to capture sunlight for photosynthesis. When phytoplankton populations get large enough, their pigments color the surface waters of oceans, seas, and lakes with shades of brown, green, or turquoise.
Why is photosynthesis important to us
Figuring out the "whodunnit" in the oxygenation of Earth's atmosphere 2.4 billion years ago was relatively easy. Scientists know of only one process that could produce such large amounts of oxygen: photosynthesis. At the time that the planet was oxygenated, Earth was populated exclusively by single-celled organisms (Archaea and Bacteria), and only one of these can perform the sort of photosynthesis that splits a water molecule and results in oxygen gas: Cyanobacteria, whose blue-green color comes from chlorophyll. Today, Cyanobacteria can be found almost everywhere on Earth — likely right outside your door in the soil — and still play an important role in producing the oxygen that we breathe.
Why Is Photosynthesis Important to Humans? | Hunker
All photosynthetic pathways, including those of the Cyanobacteria, are quite similar. This suggests that they all evolved from a common ancestral pathway — in other words, that they are . However, all the different bacteria that photosynthesize are rather distantly related to one another. The coding for photosynthetic pathways seem homologous, but the lineages bearing them are not closely related enough for a to have passed the pathways on to all of them. What's the explanation for this apparent paradox? .
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