Enzyme
1) Something that speeds up a chemical reaction but that is not changed by the reactions is called a catalyst.2)An element is a pure substance (not a compound) and while some elements (such as platinum) can speed up chemical reactions (eg platinum in a car exhaust catalytic converter), by far the most common catalysts are in fact compounds not elements. These compounds are organic in nature and called enzymes.
Yes, a protein catalyst that speeds up chemical reactions in organisms is called an enzyme. Enzymes are involved in almost all cellular processes and play crucial roles in regulating biological reactions.
The answer is catalyst. The question bugs me a little, because not all catalysts are elements. Some are compounds.
Catalyst. And in cell it is enzyme
I believe you are looking for the term "accelerant." A catalyst.
Stimulants - but more probably catalyst.
This substance is called catalyst; and in living systems it is an enzyme.
it is an enzyme that speeds up chemical reactions.
Enzyme
Enzymes are the molecules that speed up chemical reactions, and these are forms of catalysts.
catalysts or enzymes which speed up chemical reactions in organisms
Enzymes are the molecules that speed up chemical reactions, and these are forms of catalysts.