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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.
Match each item in Column A with the corresponding item in Column B regarding infectious diseases Column A Column B a. Pulmonary tuberculosis i. Enteric infectious protozoan diseas
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Which process may not reduce the toxicity of a chemical in the body?
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Which functional group (side-chain) can be "cross-linked" in protein? a. sulfhydryl b. amino c. Phosphate d. Hydroxyl e. Carboxyl
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Starch is one of the most common storage products in seeds. What happens to the starch before it can be used by the germinating seed? Starch is insoluble and has to be changed,
What is Portal and Rental Circulation ? The body has other circulation systems that do not return blood directly to the heart. For instance, the blood that drains from the abdo
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