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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.
Cells regulate their level of activity by regulating the amount of proteins present in the cell at any given time, so an up regulation of enzymes would be expected to A. increase t
Diagram the cross and determine which allele is dominant for each of the following Drosophila matings? a. Two red-eyed flies yield 110 red-eyed and 35 brown-eyed offspring.!
What is Bone grafting The detailed description of the graft materials ranging from alloplastic, xenograft, allograft and autogenous grafts; including their choice has been dis
Define Regulation of intracellular Ca concentration? The cytoplasmic calcium concentration is regulated by a series of calcium pumps, which either concentrate calcium ions with
Types of cells in Phloem The phloem consists of 4 types of cells: i).sieve elements, ii) companion cells, iii) phloem parenchyma and sometimes iv) phloem fibres. The metabolit
Q. Which are the cell organelles that participate in cell division and in the formation of cillia and flagella of some eukaryotic cells? The organelles that participate in the
Describe the Technique of Operation in prosthetic valve endocarditis? The operative principle is drainage of abscess, removal of debris and valve rep or replacement to reverse
PURPOSES OF DRESSING A dressing can have a number of purposes, depending on the type, severity and position of the wound, although all purposes are focused towards promoting re
Determine the Types of Foods used in space? Weight and volume have always been the primary design factors for every piece of hardware launched into space. The shuttle is no exc
What is the meaning of Ideometric approach Ideometric approach in the context of neuropsychological assessment emphasises the patient's premorbid functioning with reference to
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