A Biological Engineer is a professional who applies engineering principles to the study and manipulation of biological systems, including cells, tissues, and organisms. They typically work in a variety of industries, including biotechnology, pharmaceuticals, and medical devices, and their job description may vary depending on the industry and organization they work for. However, some common responsibilities of a Biological Engineer include:

1. Conducting Research: Biological Engineers conduct research to understand the behavior and properties of biological systems, develop new technologies, and solve problems related to disease, food production, and sustainability.

2. Designing and Developing Systems and Products: They design and develop systems and products, such as medical devices, bioreactors, and sensors, that integrate biological and engineering principles.

3. Analyzing Data: Biological Engineers analyze data from experiments and simulations using computer modeling and statistical analysis software to test and refine their hypotheses.

4. Conducting Experiments: They conduct experiments to test the effectiveness of new technologies and to optimize existing systems and products.

5. Developing and Implementing Protocols: Biological Engineers develop and implement protocols for the production, testing, and quality control of biological products.

6. Collaborating with Other Professionals: They work closely with other professionals, such as biologists, chemists, and medical professionals, to develop and implement interdisciplinary projects.

7. Conducting Risk Assessments: Biological Engineers conduct risk assessments to evaluate the safety and effectiveness of new technologies and products.

8. Communicating Findings: They communicate their findings and recommendations to stakeholders, including engineers, project managers, regulatory agencies, and the public.

Overall, a Biological Engineer plays a critical role in applying engineering principles to the study and manipulation of biological systems to develop new technologies, products, and processes that improve human health, food production, and sustainability.