TLS Online TPP Program

#Question id: 2094


Porins

#Section 3: Genetics, Cellular and Molecular Biology
  1. are peripheral membrane proteins.

  2. contains no hydrophobic amino acid residues.

  3. have many hydrophobic alpha-helical regions.

  4. allows small hydrophilic molecules to pass through a membrane.

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TLS Online TPP Program

#Question id: 182

#Section 2: General Biology

Which amino acid is least likely to participate in acid-base catalysis?

TLS Online TPP Program

#Question id: 10762

#Section 6: Plant, Animal and Microbial Biotechnology

The following are certain statements about secondary metabolites:

a) They protect plants against being eaten by herbivores and against being infected by microbial pathogens

b) Terpenes, are the class of secondary metabolites are synthesized by methyl erythritol phosphate(MEP) pathway and Mevalonic acid pathway

c) Terpenes, are the class of secondary metabolites are synthesized by methyl erythritol phosphate(MEP) pathway and sikkimic acid pathway

Which one of the following combinations of the above statements is correct?

TLS Online TPP Program

#Question id: 111

#Section 2: General Biology

Sterols are steroids which have

TLS Online TPP Program

#Question id: 651

#Section 2: General Biology

Consider an enzyme catalysed reaction treated with inhibitor. Enzyme kinetic was analysed with Eadie Hofstee equation. A plot of V0 versus V0/[S] for an enzyme-catalyzed reaction is shown below. The control curve was obtained in the absence of inhibitor. Which effect is shown on the enzyme activity when an inhibitor is added to the reaction mixture?

TLS Online TPP Program

#Question id: 14329

#Section 5: Bioprocess Engineering and Process Biotechnology

During exponential phase in batch culture, the growth rate of a culture is proportional to the concentration of cells present. When Streptococcus lactis bacteria are cultured in milk, the concentration of cells doubles in45 min. If this rate of growth is maintained for 12 h, what is the final concentration of cells relative to the inoculum level?