Primary cell

device that makes electric current through motion of cells which are the components of the battery. They are devices that convert their inner chemical energy into electrical energy. A battery has of two or more cells which are connected together in order to give out electricity. Batteries are commonly used in single cells such as the ones used to power radios, watches and small electrical appliances that are used in everyday life. They are also used to supply energy to various machines or tools such as hearing aids and automobiles, and sizes like portable systems at different areas. They are also a resource for the use of direct current (DC). Batteries are mostly impractical because they are used for very large…

1886 when former Brush Electric Company executive W.H. Lawrence forms National Carbon Company (NCC). Two years later in 1888 Conrad Hubert starts the American Electrical Novelty and Manufacturing Company which changes its name in 1905 to American Ever Ready. In 1914 American Ever Ready becomes part of NCC and in 1917 merges with Union Carbide Company to form Eveready Battery Company and known today as Energizer. Over the next 32 years the Eveready Battery is a full-line supplier of…

motor proteins attached to the vesicles. Microtubules can also expand or shrink in length in order to establish dynamic structures that can efficiently change the internal organization of the cell, and capture organelles through the cytosol. Intermediate filaments are made up of the protein keratin. Their primary function is to strengthen the internal structure of a cell. Microfilaments are the smallest among the three cytoskeletal filaments. They consist of protein actin. Microfilaments are…

transport of K+ in the pulvinar cells (the thickening at the base of a leaflet that causes the movement of the leaflet based on differing turgor pressure in these cells). They tested many hypotheses regarding the seismonastic reaction in the Mimosa pudica, one of which tested whether there was an increased efflux of K+ from pulvinar cells during stimulation. The experimenters used all home-grown Mimosa pudica (sensitive plants). They removed pulvini cells from the stem by cutting above and…

the ovaries have an ovoid shape and are usually 3-5cm long. They are a layered structure with an outer layer germinal epithelium, tunica albuginea, cortex and medulla that is innermost (fig. 1). Although now challenged by recent discoveries (1), the germinal epithelium; a continuation of the peritoneum, is inaptly named due the mistaken belief that germ cells arise from this surface layer. Instead germ cells are more likely to arise from the gonadal tissue itself (2). Spindle shaped cells called…

What is a white blood cell? A white blood cell is a cell, which goes around the blood system searching for microbes. There are different types of white blood cells and this is about Neutrophils Granulocyte (also known as Neutrophils). They are the most abundant white blood cells in the body produced by the red marrow. They are responsible for phagocytosis of foreign elements (ex. bacteria), meaning they eat up those particles (unfortunately they die in the process) to defend our body against…

the structure and function of a lysosome. Lysosomes are a cell organelle, translating as an independent structure within a cell, possessing a specific structure and function. For a lysosome its functions include; digestion of intracellular or extracellular material, nutrition from digested macromolecules and defence/protection from harmful substances. Lysosomes are variable from cell to cell in terms of shape and size but are conventionally spherical or oval shaped, 0.5µm in diameter and around…

contained within a helical capsid that uses two segments of RNA as its genetic material. The larger portion of the RNA segment is responsible for the processes of transcription and replication, while the smaller portion is responsible for the production of the nucleoproteins and the glycoproteins. The glycoproteins are created to lock onto a specific type of cell membrane receptor, called the alpha-dystroglycan receptor. The main targets of the Lassa virus are dendritic cells and endothelial…

Mitochondria, LHON The Organelle The most well known function of the mitochondria is to produce energy for the cell. It does this by regulating cell metabolism and respiration. Mitochondria carry out multiple other functions that are extremely important (such as various forms of signaling) The mitochondria also contains DNA which can have a direct effect on some functions of the human body if there is a mutation. ( Mitochondrion.(2016, October 9)) Word count 63 (not including headings or…

The relationship between central dogma and a genetic code The vital sequence of different processes that transfers the genetic code from DNA via mRNA to finally form the functional product (finished proteins) together forms the central dogma of modern molecular biology. Thus, the genetic code is the basis of the central dogma of molecular biology. Central dogma is nothing but the flow of genetic information in all living cells including human cells from DNA to RNA to proteins. The central dogma…