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What is the typical unit used to express cell yield in wastewater treatment?

Substrate utilization rate curve is provided as below. The substrate utilization rate is approaching to its maximum, 1000 g/d/m3 as substrate concentration increases. Using the information provided, determine Ks in mg bsCOD/L. X = 100 mg VSS/L k = 10 mg bsCOD/mg VSS/d    

Which type of solid represent the cells in secondary treatment process the best? 

What is NOT the primary characteristic of the lag phase in the bacterial growth curve?

I hope you still remember this slide about the VSS production rate. Why is the item marked in red (see the illustration) excluded from VSS production?

Based on the breakpoint chlorination, determine sodium hypochlorite (purity is 7%) dosage rate (kg/day) to apply free chlorine residual of 1.0 mg/L to disinfection of 150,000 m3/day of drinking water.

Which is NOT the primary target in secondary and tertiary wastewater treatment processes to minimize its environmental impact?

We’ve established that motivation and engagement go hand in hand and that both are crucial for learning.  Discuss the differences in intrinsic motivation and extrinsic motivation in the classroom.

Essay Item (give enough detail so I can tell you know what is happening in each step and why–2 points possible): When we first started talking about the neuron I discussed the 3 major steps of the action potential (a,b,c, corresponding to lecture slides).  Discuss those three steps and what happens in each (so I am asking you to briefly tell me the “flow” of actions that make up the electrical portion of the action potential as outlined in class lecture).   

Which structure in the brain is associated with consolidation or “laying down” of new memories?