Microtubule-organizing centers The specialized non membranous regions of cytoplasm near the nucleus are the microtubule-organizing centers. These centers contain dense material. This material gives rise to a large number of…
The cytoskeleton is a network of fibers suspended through the cytoplasm. There are three fibers in the cytoskeleton. These are microtubuies, microfilaments and intermediate filaments. Functions of Cytoskeleton - The…
The concentration of mineral solutes is much higher in the absorbing cells than outside in most cases. This increased concentration of minerals in the cells is called solute accumulation. Salt…
The movement of minerals into the cell or tissue without the expenditure of energy is called passive absorption. This is a physical phenomenon. Passive absorption takes place by following ways:…
Multiple Choice Questions (MCQs) I. Angiospermae is: (a) Family (b) Division (c) Class (d) Order Match Phylum with one of the following: (a) Family (h) Division (c) Class (d) Order…
Mitochondria are commonly called as power house of the cell. They provide energy transuding system. This system is used to change the food into chemical energy by oxidative phosphorylation ATP…
The soil consists of mineral and organic matter. The mineral matter consists of pebbles, sand and clay. The organic matter consists of dead and decomposed remains of plants and animals.…
Lyso ome is a membrane-enclosed bag of hydrolytic enzymes that the cell uses to digest macromolecules. The lysosomal enzymes can hydrolyze prote ns. polysaccharides, fats, and nucleic acid. These enzymes…
The total kinetic energy of the molecules is called ___________ potential. The pressure exerted by the diffusing particles is known as ________ pressure. The special type of diffusion in N%…
The Golgi apparatus consists of flattened membranous sacs. They look like a stack of pita bread. A cell may have several interconnected stacks. Each cisterns in a stack consists of…
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