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Modern Theory
Naturalistic theory: According to this theory Life originated upon our earth spontaneously from nonliving matter. But there are two significant points in this regard to be carefully noted:
(A) Firstly: life originated upon the earth, not by a sudden chance or random mixing of non living matter, but as a result of a long, series o physical chemical changed which brought about a gradual evolution of, first inorganic and, then, organic compounds in according ever changing environmental conditions. This is called Chemical Evolution. It culminated into the synthesis of Protoplasm or Life Substance as the most complex crystsllo colloid mixture of Nature.
(B)Secondly: a chemical evolution of matter as envisaged above cannot occur under the present Environmental conditions upon earth; conditions suitable for it existed only upon primitive earth.
basic difference beyween gymnosperm,angiosperm and pteridophytes.
What are the risk factors for the development of food allergy? Having gone through the discussion above, can you identify at least one important factor leading to food allergy?
What is the difference among cryptogamic and phanerogamic plants? Cryptogamic (hidden sex organs) plants are those that do not show flowers or seeds. They comprise the bryophy
Which of the following groups is NOT ionizable? Select one: a. Guanidinium b. Imidazole c. Phosphoryl d. Amine e. Aldehyde
Q. Carbohydrate distribution in insulin? The carbohydrate distribution varies with the type of insulin prescribed. For example, in case of regular insulin 1/3rd each carbohydra
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Explain Prophylaxis of lyme disease No vaccine is currently available to prevent Lyme disease in humans. Avoidance of ticks and use of tick repellents such as DEET or picaridin
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Q. Discuss the evolution of implants in dentistry? The first use of Implants dates back to 600 A.D. in the Mayan population where intraosseous implantation of animal teeth or t
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