Science

Plant Cell Nucleus

A plant cell nucleus is a specialized structure, which stores genetic information and monitors cellular activities. Plants are monokaryotic cells, which possess an individual nucleus. A well-developed nucleus is only found in the advanced or multicellular organisms, those having division of labour. Nucleus presence is a prominent feature in plant cells, as it plays a …

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Sense of Smell

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

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Difference Between Photosystem I and Photosystem II

The difference between photosystem I and photosystem II is primarily due to the difference in active reaction centre and photon absorption. P700 is the active reaction centre of PS-I, while P680 is the active reaction centre of PS-II. PS-I absorbs light of a longer wavelength (between 725-1035 nm), while PS-II absorbs light of a shorter …

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Nitrification

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

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Difference Between Unicellular and Multicellular Organisms

The difference between unicellular and multicellular organisms is primarily due to cell composition, function, and arrangement. Unicellular organisms exist as an individual cell, whereas multicellular organisms possess a group of specialized cells. Unicellular organisms mediate all their cellular activities by a single cell itself, while multicellular organisms perform specific cell activities through their specialized or …

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Difference Between Water-Soluble and Fat-Soluble Vitamins

The difference between water-soluble and fat-soluble vitamins is primarily due to the difference in absorption and excretion rates inside a body. Water-soluble and fat-soluble vitamins are the two major classes or groups of vitamins required to maintain good health. Absorption: Water-soluble vitamins are readily absorbed in the small intestine, while fat-soluble vitamins are first absorbed …

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Neurotransmitters

Neurotransmitters refer to the chemical messenger molecules, which contain amino acids, amines, purines and neuropeptides. Its activity may trigger or restrict nerve impulse production. Its synthesis occurs endogenously by the presynaptic neuron. Neurotransmitters release out upon membrane stimulation. They ensure neurotransmission by transmitting an action potential beyond the chemical synapse. Our nervous system uses neurotransmitters …

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