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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.

Plant Cell: Structure, Parts, Functions, Labeled Diagram

October 12, 2023September 16, 2023 by Faith Mokobi
plant cell labeled diagram

Plant cellsĀ 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 a variety of membrane-bound cell … Read more

Osmosis: Definition, Types, Examples (Osmosis vs Diffusion)

October 1, 2023September 3, 2023 by Anupama Sapkota
Osmosis

Osmosis is a biophysical process occurring commonly in biological systems where solvent molecules move across a semi-permeable membrane towards a region of high solute concentration. Figure: Osmosis. Image Source: Open … Read more

Mitosis: Phases, Stages, Applications with Diagram

October 1, 2023September 3, 2023 by Anupama Sapkota
Mitosis- definition, purpose, stages, applications with diagram

Mitosis is the process of cell division in which one cell gives rise to two genetically identical daughter cells, resulting in cell duplication and reproduction. Image Source: Biology Wise. Purpose … Read more

3 Principles of Cell Theory with Historical Journey

October 12, 2023August 3, 2023 by Nidhi Dewangan
Principles of Cell Theory

Initially, scientists thought that life formed spontaneously on the earth from non-living substances, but experiments and the invention of the microscope shed clarity on this hypothesis, and scientists understood that … Read more

Beyond the Membrane: Understanding Bulk Transport

August 3, 2023August 3, 2023 by Krisha Karki
Bulk Transport

Bulk Transport is a cellular process by which large amounts of material are transported in or out of the cell in membrane-bound sacs called cysts. The membrane is held together … Read more

Budding: Asexual Reproduction in Plants and Hydra

August 3, 2023August 3, 2023 by Krisha Karki
Budding

Budding is a form of asexual reproduction developing a new individual from the same generative anatomical point of the parent organism restricted to specialized areas. However, in some cases, buds … Read more

Endosymbiosis- Definition, 5 Examples, Theory, Significances

August 3, 2023 by Bikash Dwivedi
Endosymbiotic Theory

Endosymbiosis is the association in which one cell resides inside the other cell, and they have a mutual interaction of benefitting and getting benefitted. Symbiosis is the relationship between organisms … Read more

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

Types of Leukocytes (White Blood Cells)- Structure, Functions

August 3, 2023 by Babita Sharma
Types of Leukocytes (White Blood Cells)

What are Leukocytes? Leukocytes, also known as white blood cells, are a cellular component of the blood that has a nucleus, absence of hemoglobin, and is capable of motility. They … Read more

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