Aminerals luster is produced by its ability to transmit light. opaque minerals always have a metallic luster because they do not transmit any light.

answer; ///i do believe the answer is (virus);

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

what's the question?

answer: blah

explanation:

bc blah