Nerve Impulse

Nerve impulse can define as the generation of action membrane potential beyond the cell membrane in response to the stimulus. The propagation of nerve impulse, as a result of a change in membrane potential beyond the cell membrane commonly, refers to as “Nerve impulse conduction”. When a nerve impulse or action potential reaches the axon …

Nerve Impulse Read More »

Neurons

Neurons are the fundamental components of the nervous system that perform a specific task by receiving, conducting, and transmitting the signal or action potential to the other parts of the body. An electrical signal produced by the neurons refers as Nerve impulse that propagates via continuous and saltatory conduction. A term neuron is sometimes interchangeable …

Neurons Read More »

Sclerenchyma Tissue

Sclerenchyma tissue can define as one of the types of ground or simple permanent tissue that constitutes both primary and stiff secondary wall. These are generally rigid woody cells with a compact arrangement. Sclerenchyma has a characteristic feature, where it functions to promote cell strength and conduction instead of being a dead cell. On secondary …

Sclerenchyma Tissue Read More »

Motility Test

Motility test can consider as the biochemical or microscopic examination of an organism to check the existence of cellular-motility. By performing this test, one can differentiate between the two major groups of bacteria, namely motile and non-motile, based on their cellular movement. Few organisms are motile, whereas few are non-motile, but all the living organisms …

Motility Test Read More »

Spectrophotometer

The spectrophotometer measures absorption and spectral bandwidth of the given sample. Absorption is the logarithm of transmittance, i.e. Log (T), whereas transmittance is the portion of light moved through the sample. Transmittance can define as the ratio of light incidents on the test sample to the light transmits through the solution, i.e. IO/I. Spectral bandwidth …

Spectrophotometer Read More »

Gluconeogenesis

Gluconeogenesis is a reverse cycle of the glycolytic pathway, which produce glucose by the precursors like pyruvate, lactate, glycerol etc. and also refers as Neoglucogenesis. Its a ubiquitous or universal pathway that occurs in humans, animals, plants, fungi and other living organisms. Gluconeogenesis is the opposite process to glycolysis in only three irreversible steps, while …

Gluconeogenesis Read More »

Vermicomposting

Vermicomposting is one of the types of composting technique, which turns the organic debris into a humus-like product, by the use of earthworms. The compost produced by this method refers as “Vermicompost”.  The vermicompost can merely define as earthworm’s excrement, which provides essential nutrients, aeration, porosity, structure, fertility and water-holding capacity to the soil and …

Vermicomposting Read More »

Bile Solubility Test

Bile solubility test is a biochemical test that distinguishes bile soluble and bile resistant α-haemolytic streptococci. Streptococcus pneumoniae is the only strain that emulsifies on reaction with bile solubility reagent, while the other α-haemolytic streptococci do not undergo such reaction. The reason for the dissolution of the Streptococcus pneumoniae is due to the presence of …

Bile Solubility Test Read More »

Urease Test

Urease test is an analytical method which is practised to identify the urease positive and negative organisms based on the production of cytosolic urease enzyme. It distinguishes the Proteus species from the non-lactose fermenting members belonging to the Enterobacteriaceae family. Urease test makes the use of urea base. Conventionally, Stuart formulated urea broth was used …

Urease Test Read More »

Coagulase Test

Coagulase test is an analytical method that demarcates the staphylococci species into coagulase-positive and coagulase-negative species. Staphylococcus aureus, S. intermedius, S. hyicus, are the coagulase-positive organisms, whereas Staphylococcus epidermis, S. saprophyticus, S. haemolyticus, S. lugdonensis etc. are coagulase-negative organisms. Coagulase is an enzyme that can either bound to the cell surface of bacteria as “Bound …

Coagulase Test Read More »