Cell Biology

Meiosis: The Process of Germ Cell division

meiosis - cell division

Meiosis, or reduction division, is a process during which exchange of genetic material between the homologous chromosomes (crossing-over and recombination) takes place and such a division of the genetically material occurs the four daughter cells. Historical Aspects Meiosis was discovered and described for the first time in sea urchin eggs …

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What are Vacuoles? Why these are called Storage Bubbles?

what are vacuoles

The vacuole holds large amounts of water or food. Don’t forget that these can also hold plant waste products. Those waste products are slowly broken into small pieces that cannot hurt the cell. It holds onto things that the cell might need, just like a backpack. Historical aspects Contractile vacuoles …

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What is mitosis? Steps of Mitosis and Importance

What is mitosis? Steps of Mitosis and Importance

Mitosis is the simplest type of cell division, which is responsible for the growth of tissues and individuals. the phenomenon of mitosis is of universal occurrence and is found in all living beings from the smallest bacterium to the largest animal. It shows a marked similarity in its minute’s details …

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Lysosomes: Structure and Functions

Lysosomes: Structure and Functions

Lysosomes (Laso = dissolving; some = body) are membrane-bound spherical organelles containing lysosomal enzymes, that are hydrolytic in nature. Important enzymes present in the lysosome are acid hydrolases, proteases, lipases, and acid phosphatases. Let us see why lysosomes are called suicidal bags of the cell? These enzymes are capable of …

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What are the key structures and functions of the Mitochondria?

mitochondrian

Mitochondrial are present in all eukaryotic cells and are the major sites of aerobic respiration within cells. they were first seen as granules in muscle cells in 1850. The number of mitochondrial per cell varies considerably and depends on the type of organism and the nature of the cell. This …

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Endoplasmic Reticulum: Basics and Functions

Endoplasmic Reticulum

According to Dallmer (1966), Endoplasmic Reticulum is originated from the plasma membrane by the investigation. According to Derobertis (1970), the ER originates from the nuclear envelope.  The Endoplasmic Reticulum (ER) is a strikingly complex structure within the cell and has three morphologically distinct regions: Sheets of the nuclear envelope A network of interconnected …

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