specialization of individual cells

1) When both the cars are moving in the same direction, i.e., q = 0 0 degrees. Thus, the relative speed between two bodies moving in the same direction is equal to the difference of the individual speeds of two bodies. 2) When the two cars are moving along parallel lines in opposite direc..

At the cellular level, growth of multi cellular organisms is governed by two main activities Reproduction of individual cells of body by mitotic cell divisions Growth of cells by synthesizing new protoplasm. The interphase stage of the cell cycle is..

.8 - Cell Structure of Cyanobacteria The planktonic forms contain gas vacuoles in their cells to help in floating. Some cyanophycean members possess special types of cells called heterocysts, as in Anabena and Nostoc. They are large, thick walled, round ..

Semiconductors whose conductivity is more than insulators and less than metals are used in electronic devices. The conductivity of the semiconductors increase when light falls on it. Wafers of doped semiconductors are so arranged that when sunlight falls on the arrangement, potential differences ar..

It is represented by loosely arranged parenchyma cells found in between the vascular bundles. The cells are specialized for storage of wate..

Points to Remember - Modes of reproduction in plants can be grouped into 2 types a) asexual b) sexual reproduction Regeneration of new plants from portions of vegetative organs is very common. Runner, rhizome, bulbs, corns and tubers serve as means of propagation. A population of genetically identi..

Sexual reproduction involves the formation and fusion of special sex cells called gametes. It is a complex proce..

Accretionary growth: - Post embryonic growth in some special cells to reinforce and replace the worn out differentiated cells..

The epithelial cells become specialized to form receptors that are capable of receiving the various external and internal stimuli, and transferring them to the nerve cells. E.g. Photoreceptors, thermoreceptors, osmoreceptors, pressure receptor..

Molecular Basis of Differentiation - All the cells of an organism receive the complete set of genes (total information) present in the fertilized egg through mitotic divisions. However, cells of an early embryo lose the potential for the expression of all the genes through the p..