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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.
GRAFFIAN FOLLICLE - It appears as knob or stigma in medulla. It is round, discovered by Graff. It is covered by 2 layers - thecae externa & theca interna. From theca i
Q. Does Ascaris lumbricoides present an intermediate host? An Ascaris is a monoxenous parasite, its life cycle is dependent only on one host and so it doesn't have intermediate
How is the early diagnosis of genetic diseases usually done? Genetic disease might be diagnosed in the prenatal period by karyotype analysis, in case of aneuploidies, or by DNA
SIMPL E EPITHELIA (UNILAYERED EPITHELIA) - 1 . SIMPLE SQUAMOUS EPITHELIUM (PAVEMENT EPITHELIUM) - It is composed of large flat cells whose edges fit closely toge
The Carbohydrate sets are covalently attached to various variant proteins to form glycoproteins. Carbohydrates are a shorter percentage of the weight of glycoproteins than of prote
Q. Which are mineral salts? Where in living beings can found mineral salts? Ans. Mineral salts are simple inorganic substances made of metallic chemical elements, like sodiu
Explain the pair of chromosomes and Sex Chromosomes? Morgan also noticed that one pair of chromosomes is different in male and female flies, one of the male chromosomes being
Ecological isolation is based on the fact that population shows preference to one habitat over the other. This extensive forests become barriers to the dispersal of organims living
Q. What are some antibiotics used against fungi? The systemic or topical azoles (like fluconazole, itraconazole and others), amphotericin B, the echinocandins (caspofungin, mic
What is tuberculosis? How is the disease transmitted? Is there treatment for tuberculosis? Tuberculosis is a disease caused by the Mycobacterium tuberculosis, bacteria which at
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