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α- amylase activity by GA3 - Dormancy
Of the enzymes required for the digestion of starch α-amylase appears immediately after the start of germination. It was found that if the embryo was removed no a-amylase appeared, however, if very low concentations of GA3 were added to the seed the production of digestive enzyme proceeds. The work over the last 30 years proved the fact that GA3 initiates action at transcriptional and translational levels. Not only activation of pre-existing m-RNAs coding for a-amylase but synthesis of m-RNA also takes place after the exposure of seeds to GA3.
Cytokinins and Cell Division
Cell division involves synthesis of new DNA, RNA and a host of cell proteins in interphase (cell cycle S1 and S2). All these events are promoted by cytokinins. Cell division also means synthesis of a number of enzymes that are needed for the synthesis of cell wall and middle lamella.
Describe the structure of pectin Its structure is presented in the figures (a) and (b). Pectin is a polygalacturonic acid ester along with rhamnose, arabinose and galactose.
questions and answers on human impacts on environment
Define Miscellaneous Functions of Protein? Besides the functions enumerated above certain other important miscellaneous functions of proteins are included herewith. These inclu
Q. What do you mean by Binomial system in binomial nomenclature? In the previous sections we have outlined the concepts of binomial nomenclature at International level and the
Weaning the Infant from the Incubator When heater output reading is minimal or nil it suggest that infant is capable of generating enough metabolic heat to keep himself war
Secondary Growth in a Typical Dicotyledonous Stem In stem, the secondary growth in thickness in diameter is confined both intrastelar, i.e., in the stele and extrastelar regio
why does the removal of the extremity of coleoptile prohibit plant growth?
describe the importance,principles,techniques and uses of microscopy
Hello I have been working with reptiles for a while and have been researching the incubation method known as egg suspended. This method is used with birds. Its placeing an egg on a
Listed below are examples of behaviors that typify a defense mechanism at work. For each example choose the correct defense mechanism and explain the reason for your choice. 1. J
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