In a well aerated and agitated microbial culture, the 'supply' of oxygen is equal to 'demand' (uptake) of the growing culture. The KLa for such a system will be (KLa = volumetric mass transfer coefficient, C* = dissolved oxygen concentration in liquid in equilibrium with gaseous oxygen, C = instantaneous value of dissolved oxygen concentration, 'r' = specific oxygen uptake rate per unit weight of cells, X = dry weight of the cells per unit volume)
A. $$\frac{{\left( {rX} \right)}}{{\left( {C* - C} \right)}}$$
B. $$\frac{{\left( r \right)}}{{X\left( {C* - C} \right)}}$$
C. $$\frac{{\left( {C* - C} \right)}}{{\left( {rX} \right)}}$$
D. $$\frac{{\left( X \right)}}{{r\left( {C* - C} \right)}}$$
Answer: Option A
This Question Belongs to Biotechnology Engineering >> Basic Principles Of Biotechnology
A. Reverse transcriptase
B. Cytochrome c
C. Bacterial RNA polymerase
D. RNase P
All the following may be methods for the inhibition of microbial growth by antibiotics except
A. Antibiotics disrupt cell wall synthesis
B. Antibiotics interfere with cell membrane function
C. Antibiotics prevent the release of energy from ATP
D. Antibiotics inhibit the synthesis of protein
A feature common to almost all transmembrane proteins is
A. A phosphorylated exterior domain
B. A structure consisting almost exclusively of beta-sheets
C. An amino acid sequence rich in acidic residues
D. An alpha-helical region of about 20 to 25 hydrophobic amino acids
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