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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.

Endocytosis vs Exocytosis (Similarities and Differences)

May 4, 2022May 1, 2022 by Faith Mokobi
Endocytosis and Exocytosis (Endocytosis vs Exocytosis)

Image Source: Freepik Company S.L. Similarities of Endocytosis and Exocytosis Endocytosis and exocytosis mechanisms are forms of Active Transport, both using energy to transport particles in and out of the … Read more

Cilia- Definition, Structure, Formation, Types, Functions, Examples

May 4, 2022April 20, 2022 by Anupama Sapkota
Cilia

Cilia Definition Cilia are tiny hair-like appendages present on the eukaryotic cell surface that provides a means of locomotion to different protozoans and animals. The term ‘cilia’ is a Latin … Read more

Cytokinesis- Definition and Process (in animal and plant cells)

May 6, 2022March 30, 2022 by Faith Mokobi
Cytokinesis in plant and animal cells

Cytokinesis Definition Cytokinesis is a physical process of cell division, that normally takes place after mitosis. Cytokinesis is the physical division of the cell cytoplasm, the cell membrane, and cell … Read more

Microvilli- Definition, Structure, Functions and Diagram

May 7, 2022March 29, 2022 by Sagar Aryal
Microvilli- Structure and Functions

Microvilli Definition Microvilli, in the most simplistic terms, are tiny little microscopic projections that exist in, on, and around cells. They can exist on their own or in conjunction with … Read more

Cell Wall (Plant, Fungal, Bacterial)- Structure and Functions

May 6, 2022March 15, 2022 by Sagar Aryal
Cell Wall (Plant, Fungal, Bacterial)

Cell Wall Definition The cell wall is a rigid and protective layer around the plasma membrane which provides mechanical support to the cell. It is a non-living structure that is … Read more

Plasmodesmata- Definition, Structure, Functions and Diagram

May 7, 2022March 9, 2022 by Sagar Aryal
Plasmodesmata- Structure and Functions

Plasmodesmata Definition Every living cell in a higher plant is connected to its living neighbors by fine cytoplasmic channels, each of which is called a plasmodesma which passes through the … Read more

Monocytes- Definition, Structure, Immunity, Subsets, Functions

May 4, 2022March 4, 2022 by Anupama Sapkota
Monocytes

What are Monocytes? Definition of Monocytes Monocytes are cells of the immune system that represent immune effector cells with chemokine receptors and pathogen recognition receptors that circulate through blood or … Read more

Centrosome- Definition, Structure, Functions, Diagram

May 6, 2022February 26, 2022 by Bikash Dwivedi
Centrosome

Centrosome was first observed and discovered by Eduard van Beneden and Theoder Boveri in the years 1883 and 1888 respectively. The centriole duplication process or pattern was studied at first … Read more

Nucleus- Definition, Structure, Parts, Functions, Diagram

May 6, 2022February 23, 2022 by Sagar Aryal
Nucleus- Structure and Functions

What is Nucleus? The cell nucleus​ is a membrane-bound structure that contains the cell’s hereditary information and controls the cell’s growth and reproduction. It is the command center of a … Read more

25 Major Difference Between Plant Cell and Animal Cell

March 4, 2022February 20, 2022 by Faith Mokobi

Plants and animals are made up of millions of cells and these cells have several similarities and differences. Considering that they are both eukaryotic cells, which means they have a … Read more

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