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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.
Viscosity The viscosity at temperatures above its gelation point is relatively constant at pH values of 4.5 to 9.0 and is not greatly affected by age or ionic strength within
In what ways might (a) clothing, (b) housing, (c) writing, have contributed to the survival of human beings? a) Clothing and (b) housing provide warmth and shelter, and so hav
Q What are the retroviruses? How do they reproduce and what is the role of the enzyme reverse transcriptase? Retroviruses are viruses whose genetic material is RNA, HIV and the
Q. What are the final energetic products of every round of the Krebs cycle? And Where is most part of the utile energy at the end of Krebs cycle found? After each round of the
Question 1 Write a short note on the following Impactors Land fills Bio stimulation Green house effects Question 2 What is bioremediation? Give an account o
Locomotion in Mollusca The major locomotor organ in Mollusca is the foot, which is a characteristic feature of these animals. In its simplest form the foot is a flit ventral
Describe Class Ophiuroidea in general way? Brittle stars have a central disc with five long, thin, flexible arms that can be detached from the body at will in times of danger.
Interaction of insect hormones in the process of metamorphosis The organs and the hormones usually included in metamorphosis of insects. This is since despite the fact that t
Possible causes of elevated triglycerides: - Obesity - Alcohol - Uncontrolled diabetes - Hypothyroidism - Genetic - Liver disease - Drugs Possible causes o
excretory product of camel
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