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The amino acid responsible for the Hopkins-Cole reaction is the tryptophan because of its indole ring that in the reaction forms a violet color upon treatment of the sample with glyoxylic acid and sulfuric acid.
Physical reaction.
The positive reaction color for simple sugar is orange, by Benedict's solution.
catalyst
An example of color change is when a substance turns a differen color from a reaction.
arar ongoy
The speed of a given chemical reaction is directly responsible for spontaneity of the reaction. The reaction force and effect is contingent upon the speed of the reaction. The faster the reaction, the more force will be produced.
Chlorine is responsible for O3 depletion. It forms a chain reaction.
from chemical reaction
No, it is not.
Melanin
Chlorophyll