Penicillin is produced by P. chrysogenum in a fed-batch culture with the intermittent addition of glucose solution to the culture medium. The initial culture volume at quasi-steady state is V0 = 500 l, and glucose-containing nutrient solution is added with a flow rate of F = 50 l/h. Glucose concentration in the feed solution and initial cell concentration are S0 = 300 g/l and X0 = 20 g/l, respectively. The kinetic and yield coefficients of the organism are mm = 0.2 h-1 , KS = 0.5 g/l, and YX/S = 0.3 g dw/g glucose. If qP = 0.05 g product/g cells h and P₀ = 0.1 g/l, determine the product concentration in the vessel at t = 10 h

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#Question id: 3637

#SCPH01 Biochemistry

Parents that are homozygous for different mutations a, b and c are crossed, producing offspring that are heterozygous as following

aa X bb        =  ab  (X)          

 bb X cc         =  bc  (Y)

aa X cc          =   ac  (Z)

If a and b belong to same locus but b and c belong to different locus then phenotype of heterozygote

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#Question id: 290

#I Life Science/ Life Sciences Group – I-V

Which of the following is a TRUE statement about ionic bonds in protein structure:

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#Question id: 1108

#SCPH06 I Botany

Which of the following amino acids are most frequently phosphorylated by protein kinases in the cytoplasm during signal transduction?

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#Question id: 12721

#SCPH06 I Botany

There are the five groups of late embryogenesis abundant (LEA) proteins found in plants

Match the following groups of LEA protein with its functional information;

Group (family name)	Functional information
I) Group 1    (D-19 family)	a) It is an abundant protein in cotton embryos, Each putative dimer of this group may bind as many as ten inorganic phosphates and their counterions
II) Group 2     (D-11 family)	b) Possibly functions in ion sequestration to protect cytosolic metabolism When LE25 is expressed in yeast, it confers salt and freezing tolerance
III) Group 3      (D-7 family)	c) In tomato, a gene encoding a similar protein is expressed in response to nematode feeding
IV) Group 4     (D-95 family)	d) Contains more water of hydration than typical globular proteins Overexpression confers water deficit tolerance on yeast cells
V) Group 5     (D-113 family)	e) Often localized to the cytoplasm or nucleus More acidic members of the family are associated with the plasma membrane May act to stabilize macromolecules at low water potential

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#Question id: 12741

#SCPH01 Biochemistry

 What will happen if too much antibody is present in the Agglutination process?