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Initiation of Development - Development Biology
We know that the various events collectively called the activation programme. These events are directly related to the formation of the embryo. You have further learnt that the early response to the activation programme is the prevention of polyspermy. The late responses include many metabolic changes such as the activation of potassium ions and amino acid transport, an increase in the rate of the protein synthesis, initiation of DNA replication and several major regulatory events.
These events include production of inositol triphosphate, diacyl glycerol, release of cytoplasmic free calcium ions and rise in hydrogen ion concentration. Figure summarizes the various events that occur during the activation programme of the egg. The egg which has been under a metabolic arrest before fertilization is released from this arrest on the entry of sperm. This initiates the long process of development into a new individual by active protein and DNA synthesis in the egg leading to the beginning of cleavage.
Encystment – Protozoan Encystment is characteristic of the life cycle of many protozoan. The protozoan secretes a thickened envelope (cyst) around itself and becomes inactive
Are protozoan''s diploblastic or triploblastic
Discuss mental nerve, its anatomic variation and surgical importance. Mental nerve, branch of inferior alveolar nerve is a very important landmark during osteotomy procedures.
Define Dietary Management of Sepsis with or without MODS? Before we begin with the dietary management of patients suffering from sepsis with or without MODS let us read a case
Q. Show Appearance of food product? Appearance can be judged by the eye. Appearance factors include such things as size, colour, uniformity, absence of any defect, shape, whole
Seed Dormancy - Plant Growth Substances Seed dormancy is critically important for the survival of plants. Factors involved in seed dormancy are: A. Environmental Factors
Anticoagulation in Prosthetic Valves The usual anticoagulants used are: (I) Warfarin sodium, and (2) Acitrorn (coumarin derivative). In patients who had thromboembolism
(i) Genetic Bio- Diversity: All forms of life on earth contain genes. Genes are carrier of hereditary characteristic from one generation to another. " genetic diver
diseases of the kidney and their remedies
what are lipids? how ther absorption takes place in human bodies?
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