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TLS Online TPP Program

#Question id: 321

Water clustered about nonpolar molecules contribute to hydrophobic interactions because

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Their number is minimized to increase the total entropy of water.

  2. Nonpolar molecules are more highly organized than polar molecules.

  3. Water molecules in the cell are more organized in the regions away from the nonpolar molecule.

  4. B and C

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TLS Online TPP Program

#Question id: 1519

#Unit 4. Cell Communication and Cell Signaling

Following statements are regarding to the FOXO3a protein.

A. In the presence of growth factors, FOXO3a is non phosphorylated and mainly localizes to the nucleus, where it activates transcription of several genes encoding pro-apoptotic proteins.

B. When growth factors are removed from the cells, PKB becomes active and phosphorylates FOXO3a.

C. Phosphorylated FOXO3a binds to cytosolic phosphoserine-binding protein 14-3-3 to bind FOXO3a and thus sequester it in the cytosol.

D. Dephosphorylated FOXO3a binds to cytosolic phosphoserine-binding protein 14-3-3 to bind FOXO3a and thus sequester it in the cytosol.

Which of the following is correct?
TLS Online TPP Program

#Question id: 13226

#Unit 6. System Physiology – Plant

Mengel and Kirkby  have proposed that the essential elements be classified instead according to their biochemical role and physiological function, It shows such a classification, in which plant nutrients have been divided into some basic groups these are;
a.) The first group is nutrients that are part of carbon compounds
b.) The second group is important in energy storage reactions or in maintaining structural integrity
c.) The third group has important roles in reactions involving electron transfer or redox reaction
d.) The fourth group is present in plant tissue as either free ions or ions bound 
Which one of the following group represents CORRECT statements
TLS Online TPP Program

#Question id: 15894

#Unit 12. Applied Biology

Activated charcoal is used in nutrition media to_____
TLS Online TPP Program

#Question id: 24595

#Unit 2. Cellular Organization

Which of the following will show highest migratory distance on electrophoresis
TLS Online TPP Program

#Question id: 2855

#Unit 2. Cellular Organization

Which statements are correct about lac operator;

I. The site bound by the Lac repressor.

II. The lac operator overlaps the promoter, and so the repressor bound to the operator physically prevents RNA polymerase from binding to the promoter and thus inhibit the RNA synthesis.

III. Have 21-bp sequence with twofold symmetric and is recognized by four subunits of Lac repressor, two binding to each half-site.

IV. CAP binds as a dimer to a site similar in length to that of the lac operator, but different in sequence. This site is located some 60 bp upstream of the start site of transcription.