Science

Ozone Formation

Ozone formation takes place differently in the stratosphere region and the troposphere region of the earth’s atmosphere. The heat or sunlight causes chemical changes or dissociates molecules of oxygen into individual atoms, which can further react with the atmospheric oxygen to form stratospheric ozone. In contrast, the heat or sunlight causes chemical reactions in the …

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Floral Formula

A floral formula is one of the ways to summarise all the flower characteristics, which makes the use of discrete letters, numbers and symbols. The letters used in the floral formula indicate the members of perianth and other floral parts. Specific signs or symbols are also used to denote the properties like parentheses, aestivation, adhesion …

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Solenoid Model

The solenoid model illustrates the packaging or folding of DNA within the eukaryotic cell nucleus. It was first introduced by the scientist’s named John Finch and Aaron Klug in the year 1976. In eukaryotes, the DNA is organized compactly by the association of bead-like histone octamer and linker histone, while in prokaryotes the DNA content …

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Plant Cell Nucleus

A plant cell nucleus is a specialized structure, which stores the genetic information and monitors the cellular activities. Plants are the 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. The number of the nucleus varies among different groups of …

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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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