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The reaction takes place in the active site, a small part of the enzyme which is usually found in a cleft or pocket lined by amino acid residues, and the rest of the enzyme is used mainly for stabilization. The catalytic action of enzymes relies on several mechanisms including the molecular shape ("induced fit"), bond strain, proximity and ...
Convection cannot take place in most solids because neither bulk current flows nor significant diffusion of matter can take place. Granular convection is a similar phenomenon in granular material instead of fluids. Advection is fluid motion created by velocity instead of thermal gradients.
Metamorphism takes place at temperatures in excess of 150 °C (300 °F), and often also at elevated pressure or in the presence of chemically active fluids, but the rock remains mostly solid during the transformation. [1] Metamorphism is distinct from weathering or diagenesis, which are changes that take place at or just beneath Earth's surface ...
There has been a convention since the 1930s that general elections in Britain should take place on a Thursday; the last general election to take place on any other weekday was that of 1931. [ 2 ] Under the terms of the Fixed-term Parliaments Act 2011 , in force until March 2022, the period between one general election and the next was fixed at ...
In Ancient Greece, the symposium (Ancient Greek: συμπόσιον, sympósion or symposio, from συμπίνειν, sympínein, 'to drink together') was the part of a banquet that took place after the meal, when drinking for pleasure was accompanied by music, dancing, recitals, or conversation. [1]
Gas exchange is the physical process by which gases move passively by diffusion across a surface. For example, this surface might be the air/water interface of a water body, the surface of a gas bubble in a liquid, a gas-permeable membrane, or a biological membrane that forms the boundary between an organism and its extracellular environment.
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Absorption is a primary focus in drug development and medicinal chemistry, since a drug must be absorbed before any medicinal effects can take place. Moreover, the drug's pharmacokinetic profile can be easily and significantly changed by adjusting factors that affect absorption.