Question

why might it be advantageous for bacteria to prevent transcription of a particular enzyme unless it’s substrate is present in the enviroment

Pull It Together Section: 0702 Pull It Together Chapter 7 Section: 0703 0.74 point Advantage to preventing transcription Why might it be advantageous for bacteria to prevent transcription of a particular enzyme unless its substrate is present in the environment? O The steps involved in synthesizing proteins such as enzymes require a considerable amount of energy. O Transcription is the last stage of gene expression and is therefore more easily regulated. Several types of RNA are required for transcription to proceed, and often they are not available. O DNA is not used during transcription, and thus avoiding transcription protects the DNA from mutation. References Multiple Choice Advantage to preventing transcription Section:0705

Answer 1

Answer is "the steps involved in synthesizing proteins such as enzymes require a considerable amount of energy"

In prokaryotes, as they are singled celled organisms and are dependent on energy, they need to regulate their metabolism very strictly so that no energy is wasted. Hence, they produce enzymes only in the presence of substrate. Example is lac operon. The bacteria produces beta galactosidase enzyme only in the presence of lactose in the culture media. It is not produced when lactose is absent.