1- Answer the following questions (14 p) a) What are the main dereferences in the process of ethanol production from starch and lignocellulosic materials (3p). b) Summarize the general requirements (Materials and conditions) that are needed for microbial growth (3 p) c) What is the definition of sterility and what is the best method for sterilization of gases (3p) d) You want to design a process for cultivation of filamentous fungi, what types of reactors do you suggest for this purpose? Motivate you answer ( 2p) e) What mode of operation do you suggest for production of a product by genetically modified cells? Motivate your answer ( 3 p)