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07 Jun 2017
In 1832 "Robert Brown" discovered nucleus. It is the essential part of the cell.   A definite nucleus is absent in prokaryotic cell. Instead of it a DNA molecules is…
07 Jun 2017
In the cytoplasm of the cell complex membrane bounded system is present. It was called cytoplasmic vacuolar system by "Sacz & De robertis" in 1975. This system contains endoplasmic reticule,…
07 Jun 2017
In the animal and plant cells clus­ters of fat filled structures are present. They are called Golgi apparatus or complex. In 1898 Camillo Golgi' recognised it in the nerve cell…
07 Jun 2017
Lysosome:   These are first ob­served in liver cells. They are 1.5 to 2 milii micron in size These are single mem­brane bounded structures. They were first called pericanalicular-dense bodies.…
07 Jun 2017
DEFINITION OF MITOCHONDRIA:   Mitochondria are center for cellular respiration. It converts chemical energy into kinetic energy.   Information About Mitochondria   In 1857 Kolliker observed mitochondria and called them…
06 Jun 2017
The cytoplasm of the animal cell is bounded by a thin limiting membrane called "Cell membrane".   Nageli and Cramer called this membrane as cell membrane in 1855. In 1931…
06 Jun 2017
Cell is a fundamental, structural and functional unit of living organism. The science which deals with cells and their organelles is called cell-biology. The term cell was first used by…
06 Jun 2017
Feature Prokaryotic Cell Eukaryotic Cell 1. Nuclear envelope absent present 2. DNA single, circular and naked more than one and combined with proteins 3. Chromosome single multiple 4. Nucleolus absent…
06 Jun 2017
The cells which lack true nuclear membrane are called prokaryotic cells. Blue green algae, bacteria are the examples for prokaryotic cells.   Prokaryotic cells lack chloroplasts mitochondria, Golgi complex and…
05 Jun 2017
Cell Biology (Gr., kytos-hollow vessel or cell, logos-to discourse) is a biological science which deals with the study of cells. The cell itself can be regarded as the vital unit…
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