After the firefly launcher is smashed, ATP will glow, but glucose will not. Why? Isn't there an enzyme that breaks down glucose in its body? Put the grapes in ...

Because the direct energy source of the luminous part of fireflies is ATP, and the part that decomposes glucose is not in the luminous part, but in other parts. Cells in other parts of the body oxidize and decompose glucose to produce ATP, which is then transported to the light-emitting part to convert chemical energy in ATP into light energy. It has an enzyme that decomposes glucose, but it does not exist in the light-emitting part. There are enzymes that decompose glucose in the cytoplasm matrix, and the first stage of glucose oxidation is in the cytoplasm matrix, which can only contain very little ATP. However, the complete oxidation of glucose needs to be carried out in mitochondria, because there is no enzyme that completely oxidizes glucose in the cytoplasm matrix of eukaryotic cells. The luminous principle of fireflies is that fireflies have special luminous cells, and there are two chemicals in the luminous cells, one is called fluorescein (firefly fluorescein in fireflies) and the other is called luciferase. Fluorescein can consume ATP under the catalysis of luciferase and react with oxygen to produce stimulated oxidized fluorescein, which releases photons when it returns to the ground state. Almost all the energy released in the reaction is released in the form of light, only a small part is released in the form of heat, and the reaction efficiency is 95%, so it belongs to cold light.