Science and Technology · Biotechnology

With reference to the genetically engineered Escherichia coli used as a mercury sensor, consider the following statements: I. Traditional biosensors often face limitations due to their slow response time and poor performance in complex environments. II. The genetically engineered E. coli microbes can generate electrical signals directly in response to target contaminants without external chemical mediators. III. The engineered biosensors were able to detect mercury in trace quantities and provided a readable current signal within three hours. Which of the statements given above are correct?