Supriya N

Allosteric Site

The allosteric site of an enzyme is regulatory in function. Enzymes with allosteric or regulatory sites behave as the “Allosteric enzymes”. Such enzymes possess multiple binding sites for both substrates and effectors. Allosteric enzymes are regulated by the non-covalent or reversible binding of effectors or non-substrate molecules to the allosteric site. Thus, the allosteric site …

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Euglena Eyespot

Euglena eyespot is also called stigma or eyespot apparatus. It generally has a bright red colour appearance. Euglena is a unicellular photosynthetic organism having an eyespot apparatus as a light-receptive organelle. The red colour of the eyespot in Euglena is due to the presence of carotenoid pigment granules. In addition, it contains photoreceptors, structural, metabolic …

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Difference Between Vitreous Humour and Aqueous Humour

The difference between vitreous humour and aqueous humour is primarily in the location within the eye. Vitreous humour is a gelatinous mass occupying the vacant space within the eye lens and the retina. Aqueous humour is a watery fluid occupying the cavity within the cornea and the eye lens. The eye-cavity has distinct two chambers, …

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Cloud Formation

Cloud formation can be seen in the earth’s homosphere. Nephology is the science of clouds. Clouds form by the condensation of water vapours into water droplets or ice crystals. Stratus, cirrus, stratocumulus, cumulus and cumulonimbus are common types of clouds in the troposphere, stratosphere and mesosphere. Clouds in the stratosphere and mesosphere regions appear as …

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Difference between Colloid and Solution

The difference between colloid and solution is due to the properties like the solubility of particles, chemical nature and light scattering property. Colloids form when the particles (diameter from 1-1000 nm) are suspended in the dispersion medium. Oppositely, a true solution forms when the solute particles (diameter less than 1 nm) completely dissolve in the …

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Bacterial Transcription

Bacterial transcription occurs in the cytoplasm. Transcription merely refers to the mechanism of mRNA synthesis complementary to the DNA template strand. The whole process is regulated enzymatically by the RNA polymerase holoenzyme. The study of transcription in prokaryotes is quite simple than the eukaryotic transcription. Besides RNA polymerase, prokaryotic transcription uses some protein factors that …

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