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Formation of New Membranes
Divisions of the egg or blastomeres raise the total surface area of the two daughter cells to be covered via membrane at every cleavage. The parent cell's existing membrane is insufficient. From the proof available so far, it is pointed out that this insufficiency of membranes for daughter blastomeres during cleavage is build up from two sources:
i) A portion of the membranes that are covering the daughter cells is provided by stretching and extension of the original plasma membrane of the zygote or the blastomeres.
ii) A portion of the cell membrane is newly synthesized through the daughter cells. So, the furrow membranes are a mosaic of dissimilar parts.
What is Demographic Transition? The whole process of change with regard to population size and characteristics is called demographic transition. In order to understand this ter
Removal of a patient's peripheral intravenous catheter resulted in brief bleeding and the loss of a small amount of blood. Which of the following processes occurred during the form
Family
Yeast is cultured in the presence of radioactive phosphate and the following biological molecules are purified. Which molecule should be most radioactive? A. An oligosaccharide B.
High fibre diets High fibre diets: The patients are advised to eat high fibre cereals as whole grain flour and bread, whole grain bread cereals, whole wheat pasta and b
VACUOLES They are of 4 types - 1. Sap Vacuole - Outer membrane of sap vacuole is called T onoplast . Sap vacuole contains amino sugars, carotenoids, proteins, m
fertilization occurs when the ?
Name the reserve food materials in pheophyceae Ans) Reserve food materials in pheophyceae are laminarin and mannitol
Most of the water taken up by a plant passes through it and is evaporated to the atmosphere.What use is made of the tiny fraction of this water which is retained by the plant?
Germ Layers - Metazoa The infolding of the blastoderm of the blastula forms a gastrula with two or more layers. The outer layer is the ectoderm' and the endoderm lines the inn
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