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Ask QuestionPosted by Gulshan Kumar 1 week, 3 days ago
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Gaurav Seth 1 week, 3 days ago
Dimensions of a physical quantity are powers (exponents) to which base quantities are raised to represent that quantity. They are represented by square brackets around the quantity.
- Dimensions of the 7 base quantities are – Length [L], Mass [M], time [T], electric current [A], thermodynamic temperature [K], luminous intensity [cd] and amount of substance [mol].
Force = Mass x Acceleration = [M][L]/[T]2 = [MLT-2]
Posted by Gulshan Kumar 1 week, 3 days ago
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Gaurav Seth 1 week, 3 days ago
Aristotle is known as the “Father of Biology” because he extensively studied the natural world and contemplated its origins using scientific insights and systematic observations rather than attributing it to divine intervention. He was also the first to uncover the relationship between animals and establish a system of classification.
During his time, Aristotle made many observations about the local flora and fauna, for instance, he was the first to document that an octopus can change its colour when disturbed. He also named close to 500 species of animals, identifying their characteristic features and documenting them.
Posted by Suraj Suraj 1 week, 6 days ago
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Gaurav Seth 1 week, 6 days ago
The poet wants us to run- (i) away from the city, (ii) into the sun, (iii) towards the country, (iv) in the raindrops, (v) underneath the trees, (vi) down the hillside, (vii) through the meadow.
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Meghna Thapar 3 weeks, 2 days ago
A dihybrid cross is a cross between F1 offspring of two individuals that differ in two traits of a particular interest. For example, Mendel took homozygous dominant Round and yellow seeds (RRYY) and crossed it with homozygous recessive wrinkled and green seeds (rryy), the progeny obtained in F1 generation were all round and yellow seed (RrYy). The offsprings were heterozygous for both R and Y gene. The F1 plant has four types of gametes, RY, Ry, rY, and ry. For genes on separate chromosomes, each allele pair shows independent assortment. Thus, by crossing F1, the phenotypic ratio was 9:3:3:1, where 9 is yellow and round seeds, 3 represents round and green seeds, 3 represents yellow and wrinkled seeds and 1 represents green and wrinkled seeds.
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Yogita Ingle 1 month ago
Neuroglia are non-neuronal cells that support and protect the neurons. Neuroglia in the central nervous system include astrocytes, oligodendrocytes, microglial cells, and ependymal cells. Schwann cells and satellite cells are the neuroglia in the peripheral nervous system.
Posted by Sathya G 1 month ago
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Yogita Ingle 1 month ago
Principles of Management
Principles of management are broad and general guidelines for managerial decision making and behavior (i.e. they guide the practice of management).
Nature of Principles of Management
The nature of principles of management can be described in the following points:
1. Universal applicability i.e. they can be applied in all types of organizations, business as well as non-business, small as well as large enterprises.
2. General Guidelines: They are general guidelines to action and decision making however they do not provide readymade solutions as the business environment is ever changing or dynamic.
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Yogita Ingle 1 month, 2 weeks ago
Biomolecules are defined as any organic molecule present in a living cell which includes carbohydrates, proteins, fats etc. Each biomolecule is essential for body functions and manufactured within the body. They can vary in nature, type, and structure where some may be straight chains, some may be cyclic rings or both. Also, they can vary in physical properties such as water solubility, melting points.
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Gaurav Seth 2 months, 1 week ago
Isotonic Solution:
If the medium surrounding the cell is of exactly the same water concentration as inside the cell, there will be no net movement of water across membrane resulting in no change in size of cell. Such solution is called Isotonic solution.
(iii) Hypertonic solution:
If the medium surrounding the cell has a lower water concentration than inside the cell, i.e., if the solution is highly concentrated, then the cell will lose water through osmosis. Such concentrated solution is called Hypertonic solution.
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