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Cell Biology

Cell biology or cytology is a branch of biology that deals with studies related to the structure and function of a cell-based on the concept that the cell is the fundamental unit of life.

  • A detailed study of the cellular structure and function provides a basis for studies related to tissues, organs, and the body.
  • The number of cells in an organism might differ as some organisms have a single cell while others are made up of billions of cells.
  • In the case of single-celled organisms, the singular cell is studied, whereas, for multicellular organisms, individual cells of different tissues are studied.
  • Initially, only the outer structure of a cell was studied due to the lack of complex microscopic processes.
  • Over the years, however, advancements in other areas have made it possible to study the internal cellular components of a cell.
  • Apart from the cell structure and function, cell biology also deals with cell communication and signaling.
  • Cell biology also involves the studying of the cell cycle and cell division, which provides insight into the cellular composition of an organism.
  • Cell biology is also linked with other studies like genetics, molecular biology, cytochemistry, and biochemistry.
  • Cells are distinguished as prokaryotic and eukaryotic cells based on the complexity of the cell.
  • Cell biology enables studying the biochemical mechanisms involved in cell metabolism and different forms of cellular energy.
  • Focusing on the structural and functional aspects of a single cell allows a detailed understanding of the body overall.
  • It is also easier to perform research on a single cell as it can be modified and observed efficiently.
  • Techniques in cell biology have advanced over the years with new and improved imaging techniques to observe smaller cellular organelles.
  • Cell biology, together with systemic biology, helps in the answering of complex questions like the relationship between cellular networks, the evolutionary relationship between genomes, and the complexity of the biomolecular composition of different living organisms.

Animal Cell- Definition, Structure, Parts, Functions, Labeled Diagram

September 20, 2022September 17, 2022 by Faith Mokobi

Definition of animal cell An animal cell is a eukaryotic cell that lacks a cell wall, and it is enclosed by the plasma membrane. The cell organelles are enclosed by … Read more

Plant Cell- Definition, Structure, Parts, Functions, Labeled Diagram

September 20, 2022September 16, 2022 by Faith Mokobi
plant cell labeled diagram

Definition of plant cell Plant cells are eukaryotic cells, that are found in green plants, photosynthetic eukaryotes of the kingdom Plantae which means they have a membrane-bound nucleus. They have … Read more

Apoptosis- Definition, Pathways, Assay, Examples (vs Necrosis)

September 17, 2022August 22, 2022 by Anupama Sapkota
Apoptosis

Apoptosis is a normal genetically programmed cell death where an aging cell at the end of its life cycle shrinks and its remaining fragments are phagocytosed without any inflammatory reaction. … Read more

Golgi Apparatus- Definition, Structure, Functions and Diagram

September 25, 2022August 16, 2022 by Sagar Aryal
Golgi Apparatus- Structure and Functions

Golgi Apparatus Definition The Golgi apparatus or the Golgi body or Golgi complex or simply Golgi is a cellular organelle present in most of the cells of the eukaryotic organisms. It is referred … Read more

Rough ER vs Smooth ER- Definition, 13 Differences, Examples

September 25, 2022August 5, 2022 by Anupama Sapkota
Differences Between Rough and Smooth Endoplasmic Reticulum

Rough Endoplasmic Reticulum (RER) The rough endoplasmic reticulum is a type of endoplasmic reticulum consisting of flattened sacs, studded with protein-synthesizing particles termed ribosomes on the outer surface. The rough … Read more

Endocytosis- Definition, Process and Types with Examples

September 17, 2022July 24, 2022 by Faith Mokobi
Endocytosis- Definition, Process, Types. Examples

Endocytosis is a cellular mechanism by which, a cell internalizes substances including proteins, fluids, electrolytes, microorganisms, and some macromolecules, from its external environment. These substances undergo certain processes of breaking … Read more

Animal Cell Culture- Definition, Types, Cell Lines, Procedure, Applications

September 25, 2022July 6, 2022 by Anupama Sapkota
Animal Cell Culture

What is Animal cell culture? Animal cell culture is a type of biotechnological technique where animal cells are artificially grown in a favorable environment. The cells used in animal cell … Read more

Neutrophils – Definition, structure, count, range, functions

September 25, 2022July 3, 2022 by Anupama Sapkota
Neutrophils - Definition, structure, count, range, functions

Neutrophils Definition Neutrophils are a type of white blood cell with multi-lobed nuclei and stainable cytoplasmic granules. These are the most abundant granulocytes, occupying about 40-60% of the total number … Read more

Mast Cells- Definition, Structure, Immunity, Types, Functions

September 25, 2022July 1, 2022 by Anupama Sapkota
Mast Cells

Mast cells are cells of the immune system of the hematopoietic lineage that remain widely distributed in vascularized tissues throughout the body. Mast cells, unlike other immune cells, do not … Read more

Cytoplasm- Definition, Structure, Functions and Diagram

September 25, 2022June 17, 2022 by Sagar Aryal
Cytoplasm- Structure, Components, Properties, Functions

Cytoplasm Definition The cytoplasm is the semi-viscous ground substance of the cell. All the volume of such substance outside the nucleus and inside the plasma membrane is cytoplasm. It is … Read more

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