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Enzymes: Enzymes are biological catalysts, meaning they speed up the rate of the reaction without being used up. An example of an enzyme is amylase, which is produced by the saliva...

Lied (plural: Lieder) is the quintessential genre of German Romanticism, whose key aesthetic ideas are found in their most concentrated form in the Lieder of Beethoven, Schubert...

Differentiation is used to calculate the rate of change. For example, if you have the speed of a car (velocity), and you want to find out the how the speed has changed over time (acceleration), you can di...

White blood cells can have different roles and are important for protecting the body against pathogens. They can ingest a pathogen and destroy it, some produce antitoxins...

A giant macromolecular covalent structure with a high melting point and covalent intramolecular bonds between all atoms.