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.
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.