E. coli have a maximum respiration rate, qO2max, of about 240-mg O2/g-dry wt-h. It is desired to achieve a cell mass of 20 g dry wt/l. The kLa is 120 h-1 in a 1000-l reactor (800 l working volume). A gas stream enriched in oxygen is used (i.e., 80% O2) which gives a value of C* = 28 mg/L. If oxygen becomes limiting, growth and respiration slow; for example,

                                     

   where CL is the dissolved oxygen concentration in the fermenter. What is CL when the cell mass is  at 20 g/l?

TLS Online TPP Program

#Question id: 96

#Section 2: General Biology

A reducing sugar is one that

TLS Online TPP Program

#Question id: 97

#Section 2: General Biology

Which is a difference between maltose and cellobiose?

TLS Online TPP Program

#Question id: 98

#Section 2: General Biology

The elasticity and resistance to compression of connective tissue is due to

TLS Online TPP Program

#Question id: 100

#Section 2: General Biology

Which of the following contain NeuNAc residues and sulfated sugars, and their negative charges contribute to the viscosity of mucins.

TLS Online TPP Program

#Question id: 103

#Section 2: General Biology

Lipids may be either hydrophobic or ________.

TLS Online TPP Program

#Question id: 104

#Section 2: General Biology

Which of the following is the simplest lipids but they may be a part of or a source of many complex lipids.