TLS Online TPP Program

#Question id: 4802


Why is tetrad analysis useful for studying genetics?

#Section 3: Genetics, Cellular and Molecular Biology
  1. Cells within a tetrad are haploid so genotype is directly reflected in the phenotype.

  2. Cells within a tetrad reflect the events of meiosis.

  3. Analysis of simple systems can elucidate general rules that apply more broadly.

  4. all of the above.

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TLS Online TPP Program

#Question id: 14735

#Section 2: General Biology

Large surface are a to volume ratio of bacterial cell give advantage for

TLS Online TPP Program

#Question id: 14736

#Section 2: General Biology

In basal structure of flagella of gram positive bacteria?
1. L
2. P
3. S
4. M
Which combination is not found in above bacteria? Choose the option with both incorrect rings.

TLS Online TPP Program

#Question id: 14737

#Section 2: General Biology

Which structures are involved in formation of biofilms

TLS Online TPP Program

#Question id: 14741

#Section 5: Bioprocess Engineering and Process Biotechnology

Microbial cell recovery is carried out in a continuous disc-stack centrifuge. The centrifuge is operated at 5000 rpm for separation of baker's yeast. At a feed rate of 60 1/min, 50% of the cells are recovered. At constant speed, solid recovery is inversely proportional to flow rate. What operating speed is required to recover 90% of cells if the flow rate in the centrifuge is maintained at 601/min? 

TLS Online TPP Program

#Question id: 14742

#Section 5: Bioprocess Engineering and Process Biotechnology

Gel chromatography is used for hormone separation. A pilot-plant scale gel chromatography column packed with sephacryl resin is used to separate two hormones, A and B. The column is 5 cm in diameter and 30 cm in height: V, = 1.9x 10-4m3, Wr = 3x10-3m3 /kg dry sephacryl, ps =1.25 x 103 kg/m3 . The partition coefficients are kpA =0.38 and kpB= 0.15. If the eluting flow rate is 0.7 I/h, what is the retention time for each hormone? 

TLS Online TPP Program

#Question id: 14743

#Section 5: Bioprocess Engineering and Process Biotechnology

for the fermenter with the given data. 
Air is sparged with 0.4 vvm, it is equipped with two sets of impellers and a flat-blade turbine with four baffles. calculate power, P