#Question id: 7506
#Part-A Aptitude & General Biotechnology
#Question id: 11282
#Part-B Specialized Branches in Biotechnology
Which of the following ecosystems would likely have the largest net primary productivity per hectare and why?
#Question id: 14150
#Part-A Aptitude & General Biotechnology
#Question id: 20399
#Part-A Aptitude & General Biotechnology
#Question id: 14334
#Part-B Specialized Branches in Biotechnology
Laboratory-scale fermenters are usually mixed using small stirrers with electric motors rated between 100 and 500 W. One such motor is used to drive a 7cm turbine impeller in a small reactor containing fluid with the properties of water. The stirrer speed is 900 rpm. Estimate the power requirements for this process.