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Why do leaves change color?
Leave is the food factories of plants. During the spring and summer, leaves are actively making food and they are filled with chlorophyll, which gives green color.
As summer, ends and the days get shorter and cooler, food production stops and the leaves stop producing food. The chlorophyll disappears and they start to change into the yellows, oranges, and reds that we see in autumn.
What is the role of mitosis in growth?
Essential Concepts of Endosseous healing 1) Osteoblast is the prime bone matrix synthesizing cell. Like most secretory cells, osteoblasts are polarized cells, and the direction
Q. What are the most important structures within the cell nucleus? Within the cell nucleus the most important structures are the nucleolus, an optically dense region, spherical
Q. What are the allosteric enzymes? Allosteric enzymes are those that have in excess of one activation center and to which other substances, called allosteric regulators, bind.
how do respiration take place in animal????
Invasion or Migration - Ecology When a habitat is changed it can be a potential site for the establishment of many organisms. Many species actually invade or reach this new si
What is genesis of coronary artery diseases ? Like any other disease conditions, origin of CAD depends on an interplay between the heredity and environment so called 'nature' a
Q. What is the main risk factor for lung cancer? The major risk factor for lung cancer is tobacco smoking. In The large number of cases of this kind of cancer is due to the inc
Rothera's Test It is highly sensitive for both acetoacetic and acetone. Although it is one of the oldest methods still it is widely used. Procedure: - Take about 5ml of
Define Assessment of Selenium Status? Blood glutathione (GSH) peroxidase activity is directly related to blood selenium up to a level of 1.27 μmoles/L. Beyond this point, the a
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