Thursday, 12 June 2014

LIFE OF MAN NOW

              LIFE OF PEOPLES IN THIS SOCIETY
                             We  all peoples in this society are in a dreamy world or else we can say they becomes a big part of technology.The technology has a important role in this world.As we know the technology has got its merit as well as demerit.The biggest demerit is it has changed the people so lazy.Let think about the example of the social network itself like Facebook,Twitter etc.We have got many friends in these social networks yet we are lonely we speech to them all days,but non of them really know us.Let us think,We all know them only by looking theirs names or photos we must think that how many times we sit on these social network and spend our time on it.The technology we use know is just an en-illusion,when we step a from this device delusion we waken t to see the world of confusion.The world we slaves to the technology,we mastered.Where the information get solid by greedy buster-ed,world of interest of images where we share the pics up leave out the evolution.We all must be happy when we share the experience we had with our friends,but it not will be same when no one is there.We all not are even consider our coordinate itself we all busy with the social network.Now the children s are also become has a part of this technology,it has become that for becoming a good father it is important to by a iPod for his child. 
             https://www.youtube.com/watch?v=aPECZ0D3pFU
                   Those who read must pleas view link.This is video which tells us about the present situation of humans.We all peoples are become d a part of this social medias where we have no time to spend with our friends.If you really want to enjoy your life you ,must first get away from the social medias.We all now very social medias are good,up to a limit only.So get interact with your friends and family find time to share with them.The peoples in this society doesn't have time to spend with others they all are spending their time on computers,i pods,phones and in other social medias.Is the experience that we share when we are with friends is same when we share the experience through the social medias.So if you want to enjoy the precious moment of time just get switch off your phones and social medias and spend your time with your loving ones.    

Sunday, 1 June 2014

Origin of life

                        ORIGIN OF LIFE
               
             Origin of life is a scientific problem which is not yet solved.Actually there are plenty of ideas,but a few are only clear facts.It is generally agreed that life today is formed by common descent from a single primitive lifeforms.No one this world those not know how the life is early formed ,but all the scientists concluded that they are formed by natural process which may be think ed to took palace about 3,900 million years ago.Scientists concluded to this because in accordance with a philosophy which is called as naturalism, that is which is occurred due to natural causes.While we are saying about out origin of life we also must say about spontaneous generation,then what is spontaneous generation is meant about until the 19th early century many scientist and many other peoples believed in the regular spontaneous generation of life from non-living matter.That is called as spontaneous generation,but the Louis Pasteur was disproved it later.Louis Pasteur showed that later that without spores that no bacteria or virus where grew on sterile materials.We also must say that while discussing origin of life we must also say that Joseph Dalton Hooker got a letter on 11th Feb 1871 in that he got that Charles Darwin proposed a natural process for origin of life.
             Charles Darwin suggested that in 1873 that the original spark of life may have begun in a "Warm Little Pond"that must also consist of  with all sort of ammonia,phosphoric salt,light,and heat etc.According to him a Protein compound was then chemically formed ready to undergo still more complex changes.He also doesn't forget to explain present days .He explained about present days such matters would be instantly devoured or absorbed,which was not has been the case before living creatures were formed or originated.
             We must also consider HALDANE and OPARIN according to this no real  progress was made until 1924 when Alexander oparin said that atmospheric oxygen prevent the synthesis of the organic molecules.Synthesis means combination of two or more entities that which together form something new,it also means or refer to the creating of something by artificial means. In evolution of life the organic molecules are too necessary building block or which also is an important factor.According to the Alexander the origin of life he argued that a "primeval soup"which has an no of organic molecules could be created in an oxygen-less atmosphere by the action of sunlight.and he said that these  would combine in ever-more complex fashion until they are formed  as droplets.And these droplets would grows up by the fusion that undergoes with the other droplets,which in turn and reproduce through the action of  fission into daughter droplets,and which have a primitive metabolism in which the factors that promote "cell integrity"survive,and those do not become extinct. In modern theories also the Alexander oparin's idea is taken has a starting point.
             And when around the same time J.B.S.Haldane where also suggested that the earth's  pre-bio tic ocean's,which is to be very different that we see from todays ocean,In ocean would have formed a "HOT DILUTE SOUP".In which this soup,that is organic compounds,the building block of life,assumed to be could have been formed.This idea was called as the biopoiesis,the process of living matter evolving from self-replicating but nonliving molecules.This is to be considered as the evolution of life.
             The origin of life from the evidences found that life on the earth existed for at least 3.5 billion years ago.In a National Institutes of Health study, the authors hypothesis that if biological complexity increased exponentially during evolution, life in the universe may have begun nearly 10 billion years ago- billions of years before the Earth existed, suggesting that Earth was seeded by panspermia or directed panspermia. All known life forms share fundamental molecular mechanisms, reflecting their common descent; based on these observations, hypotheses on the origin of life attempt to find a mechanism explaining the formation of a universal common ancestor, from simple organic molecules via pre-cellular life to protocells and metabolism. Models have been divided into "genes-first" and "metabolism-first" categories, but a recent trend is the emergence of hybrid models that combine both categories.This are sentences i have got while reading the origin.Living organisms synthesize proteins, which are polymers of amino acids using instructions encoded by deoxyribonucleic acid (DNA). Protein synthesis entails intermediary ribonucleic acid (RNA) polymers. One possibility for how life began is that genes originated first, followed by proteins; the alternative being that proteins came first and then genes.We know that genes and protein are both required to produce the other,for example consider whether the chicken or egg is firt produced.We know that chickens are produced from the egg that are formed by chickens.Most scientists have adopted the hypothesis that because of this, it is unlikely that genes and proteins arose independently.FRANCIS CRICK was the first one to suggest the first life was based on the RNA,which has got the DNA like properties of information storage and the catalytic property of the some of the proteins.which is know asthe RNA world hypothesis,and which is supported by the  observation that the many of the critical components of cell are composed mostly or entirely of RNA. Also, many critical cofactors are either nucleotides or substances clearly related to them. The catalytic properties of RNA had not yet been demonstrated when the hypothesis was first proposed,but they were confirmed by Thomas Cech in 1986.

DEFINITIONS

                                                    DEFINITIONS

                                  It is a challenge for scientists and philosophers to define life in unequivocal terms.This is difficult partly because life is a process, not a pure substance.Any definition must be sufficiently broad to encompass all life with which we are familiar, and must be sufficiently general to include life that may be fundamentally different from life on Earth.Some may even consider that life is not real at all, but a concept instead.

BIOLOGY
                             We all know that the life Since has no unequivocal definition of life,and so the current understanding is only descriptive.The life is considered as the characteristic of something that exhibits all or most of the following traits.  
Homeostasis:The Homeostasis is the Regulation of the internal environment to maintain a constant state.Let us consider the example,that the electrolyte concentration or the sweating to reduce the temperature..
Organization:Organization is structurally composed which has one or more cells has the basic unit of life.
Metabolism: Transformation of energy by converting chemicals and energy into cellular components (anabolism) and decomposing organic matter (catabolism). Living things require energy to maintain internal organization (homeostasis) and to produce the other phenomena associated with life.
Growth: Maintenance of a higher rate of anabolism than catabolism. A growing organism increases in size in all of its parts, rather than simply accumulating matter.
Adaptation: The ability to change over time in response to the environment. This ability is fundamental to the process of evolution and is determined by the organism's heredity, diet, and external factors.
Response to stimuli: A response can take many forms, from the contraction of a unicellular organism to external chemicals, to complex reactions involving all the senses of multicellular organisms. A response is often expressed by motion; for example, the leaves of a plant turning toward the sun (phototropism), and chemotaxis.
Reproduction: The ability to produce new individual organisms, either asexually from a single parent organism, or sexually from two parent organisms.

These complex processes, called physiological functions, have underlying physical and chemical bases, as well as signaling and control mechanisms that are essential to maintaining life.