So about this science blog teacher ask us do

okok la.. Just do wat teacher ask to do dont do nonsense.. juz wannna try something new

Tuesday, 27 July 2010

Difference Between Photosynthesis and Respiration


What our teacher mdm yip asked
What happens when photosynthesis stop?
Our theory

From our perspective,if there was no photosynyhesis ,the provision of oxygen by the trees would be lost and it would lead in increasing the degree of global warming as poisonous accumulate in the atmosphere.

And the FOOD CYCLE would be disturbed as chain starts with plants as they produce glucose through photosynthesis

Can photosynthesis work without sunlight?

What we think is that, there is a least one exception: a little bacterium deep under the Pacific Ocean which manages photosynthesis without sunlight.

The bacterium’s survival rests on dim light generated by the heat in hydrothermal vents close to eight thousand feet deep in the ocean. Sunlight may penetrate as deep as six hundred or so feet into the ocean, but not eight thousand.

The discovery has changed what we understand about the requirements for life.

Maybe photosynthesis is taking place in other previously unexpected places too, like under the ground. If light other than sunlight can support photosynthesis, then maybe, just maybe, it’s taking place on planets that don’t have a star like our sun.

A NEW THING WE HAVE FOUND OUT. TAKE A LOOK AND COMMENT:) It is called Bioactive metabolite symbiosis.(so bombarstic word man. aiyo)

Symbiosis means different organisms living together; often this relationship allows the symbiotic system to be more successful than the partners would be individually. Familiar examples of microbial symbioses with larger creatures include animals that host photosynthetic microbes to make their food for them, such as corals. Very recently, we and others have begun to realize that symbiosis based, not on ordinary metabolism, such as photosynthesis, but biosynthesis of complex and unusual molecules, is an equally important phenomenon. The molecules microbes make for their hosts can defend them against enemies and disease, and many have potential as drugs to treat human ailments. There is also another one.

Iron acquisition by marine microbes.Long ago in the ancient world, before cyanobacteria evolved oxygenic photosynthesisand poisoned the world withoxygen, iron was plentiful in the oceans, where life was evolving. Because iron was abundant and is a versatile catalyst for biological reactions, life evolved many enzymes that contain iron. When oxygen levels rose, ironprecipitated as rust, and organisms that live in aerobic environments have been struggling to getenough iron for the last billion years. Marine microbes have a particularly difficult task since seawater has the lowest iron levels of any habitat on earth; lack of iron limits productivity in vast areas of the ocean. Scientists are beginning to believe that the molecules marine microbes make to bind iron have permeated the entire ocean, and these molecules are the only reason that enough iron remains dissolved to support photosynthesis by marine phytoplankton, a process that accounts for a major fraction of the planet’s capacity for removing carbon dioxide from the atmosphere. THE FIRST ONE IS THE IRON ACQUISTION. AND THE SECOND ONE IS SYMBOSIS.

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Our initial theory:
Photosynthesis is only for plants which give oxygen and respiration is breaking down food into energy.

Better theory:
Photosynthesis give plants nutrients. It is thethe process that converts carbon dioxide into organic compounds especially sugar using the energy from the sunlight. It occurs in plants, algae but not in archae. The plants can make its own food. Carbon dioxide and water is used. So, carbon dioxide and water and light energy gives carbohydrate and oxygen. But respiration is totally different. Respiration, which also refers to cellular respiration is the process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide and energy. It release waste products. It includes glucose, amino and fatty acids. The energy released is used to store energy. It needs oxygen, O2 and gives out waste and carbon dioxide, CO2. Photosynthesis is the opposite of respiration. But when both work together they can do alot of beneficial things.The process of photosynthesis and respiration are inter-related and serve one another. While photosynthesis requires carbon-dioxide and releases oxygen to produce glucose, respiration needs oxygen while inhaling and releases carbon-dioxide while exhaling.Photosynthesis happens during the day time when the sun shines because the plants require sunlight to produce energy. On the other hand respiration happens all the time as long as a living creature is alive. However, unlike other living creatures, the plants breathe once in a day. During night, when there is no sunlight, the stomata through which sunlight and carbon-dioxide enter the leaves are closed and the leaves breathe releasing carbon-dioxide in the air.

WHY WE STUDY PHOTOSYNTHESIS
The importance of photosynthesis as a natural process and the impact it has on all of our lives is crucial. Research into the nature of photosynthesis is crucial because only by understanding photosynthesis can we control it, and harness its principles for mankind. Science has only recently developed the basic tools and techniques needed to investigate the complex details of photosynthesis. It is now time to apply these tools and techniques to the problem, and to begin to reap the benefits of the researches done by scientists.Our quality of life, and our very existence, depends on photosynthesis, it is better that we understand it. Through understanding, we can avoid adversely affecting the process and precipitating environmental or ecological disasters.We can also learn to control photosynthesis, and thus enhance production of food, fiber and energy. Understanding the natural process, which has been developed by plants over years, will also allow us to use the basic chemistry and physics of photosynthesis for other purposes, such as solar energy conversion, the design of electronic circuits, and the development of medicines and drugs.



THE IMPORTANCE OF PHOTOSYNTHESIS
Among all the living organisms on planet earth only plants are capable of producing their own food and deriving energy from it. No other living creature can produce their food and thus, depend on plants or other creatures which feed on plants to survive. Therefore, by producing energy the plants supply all the necessary nutrients and energy directly and/or indirectly to the other living creatures. The production of this energy is possible through photosynthesis.



Conclusion
Going by all the above the facts it is evident how photosynthesis plays a vital role in regulating the life cycle on earth. Now you may realize the importance of photosynthesis every time you breathe in and out and take a look at the plants at your backyard or neighborhood or front garden. The sunlight, water and the plants work together to supply the raw source of energy to us and help us breathe in oxygen to live on. Life without photosynthesis, would, thus be impossible.

1 comment:

  1. A better theory : symbiosis is mutualism+parasitism+commentilism
    Mutualism is the relationship which both party benefits from the relationship. commentilism is the relationship which one benefits while the other doesn't but never gets affected by the relationship.However for parasitism one benefits while the other is being affected by the relationship.

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