Science

Sense of Smell

Sense of smell is one of the senses that is processed by our nervous system to let us know more about our surroundings, and about the things we consume to keep the body healthy and safe. The smell is a sense of the information coming through the nose. The sensory organ comprises specialized cells and …

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Difference Between Photosystem I and Photosystem II

The difference between Photosystem I and Photosystem II is primarily due to the following factors: Active reaction centre: P700 is the active reaction centre of PS-I, while P680 is the active reaction centre of PS-II. Photon absorption: PS-I absorbs light of longer wavelengths (ranging between 725-1035 nm), while PS-II absorbs light of shorter wavelengths (<680 …

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Nitrification

Nitrification is one of the crucial steps of the nitrogen cycle that occurs in soil. It is an aerobic process that involves two successive oxidation reactions, where the ammonia first oxidizes into nitrites, and then nitrites get oxidized into nitrates. It occurs in the soil, which includes members of autotrophic bacteria and archaea that facilitate …

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Difference Between Unicellular and Multicellular Organisms

Difference between unicellular and multicellular organisms is primarily due to the difference in cell composition, cell function and cell arrangement. Cell composition: The unicellular and multicellular organisms incorporate a single cell and multiple cells, respectively. Cell’s function: Unicellular organisms mediate all their cellular activities by a single cell itself, while multicellular organisms perform specific cell …

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Difference Between Water-Soluble and Fat-Soluble Vitamins

Difference between water-soluble and fat-soluble vitamins is primarily due to the difference in the process of absorption and excretion rates inside a body. Absorption: Water-soluble vitamins are readily absorbed in the small intestine, while fat-soluble vitamins are first absorbed in the lymph, later stored inside a liver and fatty tissues. Excretion: Water-soluble vitamins swiftly excrete …

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Neurotransmitters

Neurotransmitters also refer as “Chemical messengers” that is composed of molecules like amino acids, amines, purines and neuropeptides. Its activity can inhibit or excite the production of a nerve impulse. Its synthesis occurs endogenously by the presynaptic-neuron and releases out on membrane stimulation. Neurotransmitter ensures neurotransmission by transmitting an action potential beyond the chemical synapse. …

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Synapse

Synapse is a term that was first coined by Charles S. Sherrington in the year 1897 and derived from the Greek word “Synapsis” which means to conjugate or clasp. The communication between the neurons is through synapses only that helps in the transmission of a nerve signal from one to the next cell. A scientist …

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