Secretory Vesicles – Definition, Structure, Functions, and Diagram
may contain materials that must be eliminated from the cell. These materials could be harmful to cells, such as end products of chemical reactions or waste products.
Cell Biology
Cell biology is the branch of biology that studies cells, the basic units of life. It is concerned with the structure, function, and behavior of cells, as well as the ways in which they interact with their environment.
Cells are the fundamental building blocks of living organisms. They are the smallest unit of life that can perform all the functions necessary for life, including metabolism, growth, reproduction, and response to stimuli. Cells are also the basic unit of structure in all living organisms, from simple single-celled organisms to complex multicellular organisms such as animals and plants.
Cell biology seeks to understand the properties and behaviors of cells in order to understand how they function and how they interact with their environment. This includes studying the various organelles within cells, such as the nucleus, mitochondria, and ribosomes, and how they work together to carry out the functions of the cell. It also includes studying the way in which cells communicate with each other and their environment, as well as the mechanisms by which they grow and divide.
Overall, cell biology is an important field of study that helps us understand the fundamental processes of life and how they are regulated at the cellular level.
Cell biology is an important field of study because it helps us understand the fundamental processes of life and how they are regulated at the cellular level. This knowledge is critical for many areas of science and medicine, including the development of new drugs and therapies, the understanding of diseases and disorders at the cellular level, and the study of the evolution of cells and organisms.
Some specific examples of the importance of cell biology include:
Understanding the causes of diseases: By studying cells and how they function, scientists can identify the underlying causes of many diseases and disorders. This can help in the development of treatments and therapies that target specific cells or processes in the body.
Developing new drugs and therapies: The knowledge of cell biology can be used to develop new drugs and therapies that target specific cells or processes in the body. For example, many cancer therapies are designed to target and kill cancer cells, while others are designed to stimulate the immune system to attack cancer cells.
Improving our understanding of the body: By studying cells and how they function, we can gain a better understanding of how the body works as a whole. This knowledge can be used to improve healthcare and prevent or treat diseases and disorders.
Studying the evolution of cells and organisms: By studying the structure and function of cells, we can learn about the evolution of cells and organisms over time. This can help us understand how different organisms are related and how they have adapted to different environments.
Subcategories
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Cilia and Flagella – Definition, Structure, Function
Cilia as well as Flagella are complex cytoplasmic filamentous structures that protrude through the cell’s wall. They are small, particularly distinct appendices to the cell. The flagella (singular meaning flagellum) are hairy, long structures that extend out from the plasma membrane. They can be utilized to move the entire cell.
Golgi Apparatus – Definition, Structure, Functions, and Diagram
The principal purpose for Golgi’s main function is Golgi apparatus is to transfer vesicles or packets of different cell products, to various areas of the cell.
Lysosomes – Definition, Structure, Formation, Functions, Types and Diagram
Lysosomes are membrane-boundand dense granular structures that contain hydrolytic enzymes that are responsible for digestion in extracellular and intracellular cells. The term “lysosome” is composed of two words “lysis” which means breakdown, and “soma” which means body. It is a crucial cell organelle, responsible for inter- and extracellular breakdown of various substances.
Endospore – Definition, Formation, Germination, Structure, Resistance
Endospores are dormant, tough, resistant, and non-reproductive structures which are produced by gram-positive bacterial cell (such as bacillus, clostridium) in the phylum firmicutes during the unfavorable condition of the environment.
Exocytosis – Definition, Types, Steps, Examples
Exocytosis is a type of process, in which involves the movement of materials from the inside of a cell to the exterior of the cell by the use of energy.
Metaphase – Definition, Stages, Applications
Metaphase is a stage of the cell cycle that occurs in both mitosis and meiosis cell division. During this stage, individual chromosomes cannot be observed in the cell nucleus.
Cytoplasm – Functions, Structure, Definition, and Diagram
The cytoplasm, a highly viscous substance (gel-like) that is enclosed within the cell membrane. It is composed of water (about 85%), proteins (10-15%), lipids (2-4%) and nucleic acids, inorganic salts, and polysaccharides in smaller amounts. Depending on the cell’s configuration, cytoplasm might also contain occasional inclusions (e.g. stored nutrients and pigments).
Plant cell – Structure, Definition, Diagram, Organelles
Animals, fungi and protists are composed of at least one eukaryotic cell. However archaea and bacteria are composed of only one prokaryotic cell. Plant cells differ from cells belonging to other organisms due to their cell walls, chloroplasts and the central vacuole.
Stroma in chloroplast and Stroma in Animal Tissue
Stroma, as a term in botany, refers to the transparent fluid that surrounds the grana inside the chloroplast. In the stroma, there are the grana (stacks of the thylakoid) and sub-organelles, or daughter cells in which photosynthesis begins prior to the chemical reactions being completed within the stroma.