Which of these sentences characterizes the regulatory mechanisms of gene expressions in organisms? . . a. they the organism to utilize all the metabolic resources inside their body completely, which sometimes may lead to lack of metabolites.. . b. they save energy and metabolites and the organisms to respond to the environmental changes.. . c. they utilize a high amount of energy, always lead to catabolic processes, and may lead the organism to exhaustion..

The sentence “they save energy and metabolites and help the organisms to respond to the environmental changes” characterizes the regulatory mechanisms of gene expressions in organisms. The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

answer; /// i believe the correct answer is (reactants);

i would say it is