Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?

1. Protostomes invade terrestrial environments.

2. Cambrian explosion occurs.

3. Deuterostomes invade terrestrial environments.

4. Vertebrates become top predators in the seas.

TLS Online TPP Program

#Question id: 14798

#Section 5: Bioprocess Engineering and Process Biotechnology

Match the microbial growth characteristics in column I with the corresponding features in column II.

Column I	Column II
A. Growth associated product formation.	1. Specific growth rate decreases with increasing product concentration.
B. Growth associated product formation	2. Specific product formation rate is constant
C. Product inhibition	3. Specific product formation rate is proportional to Specific growth rate.
D. Substrate inhibition	4. Specific growth rate decreases with increasing substrate concentration.

TLS Online TPP Program

#Question id: 14799

#Section 5: Bioprocess Engineering and Process Biotechnology

In a well aerated and agitated microbial culture the supply of oxygen is equal to demand of the growing culture. The kLa for such a system will be _

TLS Online TPP Program

#Question id: 14800

#Section 5: Bioprocess Engineering and Process Biotechnology

Maximum specific growth rate (pmax) of a microorganism is calculated by taking the

TLS Online TPP Program

#Question id: 14801

#Section 5: Bioprocess Engineering and Process Biotechnology

In a chemostat operating under steady state, a bacterial culture can be grown at dilution rate higher than maximum rate by

TLS Online TPP Program

#Question id: 14802

#Section 5: Bioprocess Engineering and Process Biotechnology

Column I                                                                                  column II

A. Hydrophobic interaction chromatography (HIC)          1. gradient stepwise

B. Ion exchange chromatography                                       2. isocratic

C. Gel filtration chromatography                                         3. stepwise

D. Affinity chromatography                                                  4.  Gradient stepwise

A       B       C      D

1        2       3       4

3        1       2       4

1       4        2       3

1       3        4       2

TLS Online TPP Program

#Question id: 14803

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The percentage SIMILARITIES and IDENTITIES, respectively, between the two peptide sequences given below will be ______% and _____%.

Peptide I :

Ala-Ala-Arg-Arg-Gln-Trp-Leu-Thr-Phe-Thr-Lys-Ile-Met-Ser-Glu

Peptide II:

Ala-Ala-Arg-Glu-Gln-Tyr-Ile-Ser-Phe-Thr-Lys-Ile-Met-Arg-Asp