Select the correct answer. Protein X is produced in the liver cells of the body. However, this protein is not produced within the intestine. Which statement best explains why? A. The gene for protein X is present in the intestinal cells, but it is not expressed. B. The gene for protein X is not present in the intestinal cells. C. The gene for protein X is present in the liver cells, but it is not expressed. D. The gene for protein X is not present in the liver cells.

equal distribution i think.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.