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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.

Cell Theory- Definition, History, Modern, Exceptions

August 3, 2023August 3, 2023 by Dibyak Kapali
Cell Theory

According to the cell theory, all biological organisms are made up of cells, the basic building blocks of life, and all life evolved from preexisting life. It is the cell … Read more

Pus- Definition, Formation, Types of Pus Cells, Significance

August 3, 2023 by Prakriti Karki
Pus and Pus Cells

Pus is a protein-rich thick fluid that consists of living and dead white blood cells, dead tissues, plasma proteins, and bacteria. Formation of Pus The process of formation of pus … Read more

Parenchyma Cell- Definition, Structure, Types, Functions

March 25, 2025August 3, 2023 by Babita Sharma
Parenchyma Cell

Parenchyma is a type of simple permanent tissue composed of a living cell that helps to form the ground or fundamental tissue in a plant together with collenchyma and sclerenchyma. … Read more

Gamete- Definition, Types, Spermatogenesis, Oogenesis

August 3, 2023 by Babita Sharma
Gamete

Gametes are sex cells or reproductive cells produced by gametogenesis from the germinal cell. Gametes contain only one copy (set) of dissimilar chromosomes or half the genetic material necessary to … Read more

Microvilli: Definition, Structure, Functions, Diagram

August 3, 2023August 3, 2023 by Sushmita Baniya
Microvilli Diagram

Microvilli Structure Microvilli Functions References

Plasmodesmata: Structure, Types, Functions, Diagram

August 3, 2023August 3, 2023 by Sushmita Baniya
Plasmodesmata Structure Diagram

Plasmodesmata Structure Types of Plasmodesmata Two types of plasmodesmata are formed, it is defined by their origin. Primary plasmodesmata Secondary plasmodesmata Plasmodesmata Functions References

Plant Cell Wall: Structure, Functions, Diagram

October 12, 2023August 3, 2023 by Sushmita Baniya
Plant Cell Wall Diagram

Structure of Plant Cell wall Middle lamella Primary cell wall Plasmodesma (plural: plasmodesmata) Secondary cell wall Pits Tertiary cell wall Functions of plant cell wall Cell wall in the defense … Read more

Zygote- Definition, Examples, Formation, Development, Challenges

August 3, 2023 by Prashant Dahal
Zygote

Zygote simply can be called a โ€œfused or fertilized cell (ovum)โ€. It is derived from the Greek word โ€˜Zygotosโ€™ meaning โ€˜joined or yokedโ€™. They are formed by a process called … Read more

Connective Tissue: Structure, Cells, Types, Functions, Diseases

August 3, 2023 by Anupama Sapkota
Connective Tissue

Connective tissue is one of the tissue systems in animals composed of different types of cells, all of which work together to provide internal support, adhesion, and cohesion between tissues … Read more

Cell Cycle: Definition, Phases, Regulation, Checkpoints

September 22, 2023August 3, 2023 by Anupama Sapkota
Cell Cycle

The cell cycle is the sequence of events occurring in an ordered fashion which results in cell growth and cell division. Phases of the Cell Cycle 1. Gap 0 Phase … Read more

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