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TLS Online TPP Program

#Question id: 14597

Which is true of simple diffusion of water?

#Section 2: General Biology
  1. Water usually exits a cell and produces a tremendous osmotic pressure.
  2. Water usually leaves the cell and produces negative osmotic pressure
  3. Water tends to enter and leave the cell equally, resulting in no pressure in the cell.
  4. Water usually enters a cell and produces a tremendous osmotic pressure AND the diffusion ultimately relies on the selectively permeable nature of the cell membrane.
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TLS Online TPP Program

#Question id: 14620

#Section 2: General Biology

Extrachromosomal DNA is found in ____________________________.
A. mitochondria
B. plasmids
C. nucleoid
D. Nucleoli
Which combination is correct?
TLS Online TPP Program

#Question id: 14621

#Section 5: Bioprocess Engineering and Process Biotechnology

a chromatographic separation of a two component samples on 50 cm column gave the retention times for the solutes A and B as 2.5 and 3.1 minutes with base widths of the two chromatographic peaks being 0.24 and 0.3 min respectively. Calculate plate height 
TLS Online TPP Program

#Question id: 14622

#Section 2: General Biology

Endospores are
TLS Online TPP Program

#Question id: 14623

#Section 5: Bioprocess Engineering and Process Biotechnology

a chromatographic separation of a two component samples on 50 cm column gave the retention times for the solutes A and B as 2.5 and 3.1 minutes with base widths of the two chromatographic peaks being 0.24 and 0.3 min respectively. Calculate resolution of two peak 
TLS Online TPP Program

#Question id: 14624

#Section 5: Bioprocess Engineering and Process Biotechnology

An enzyme is produced for manufacturing a sun protection lotion. Given kinetic data for the enzyme reaction with vmax= 2.5mmol M-3 S-1 Km= 8.9 mM and So = 12 mM, what would be the time required for 95% conversion in a batch bioreactor? 
TLS Online TPP Program

#Question id: 14625

#Section 5: Bioprocess Engineering and Process Biotechnology

Monod kinetics are considered in a CSTR with an organism growing with an initial substrate concentration of 50 g1-1 and kinetic parameters of Ks = 2 g1-1 and umax = 0.5 h-1 . (a) What would be the maximum dilution rate for 100% yield of biomass with maximum rate?