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TLS Online TPP Program

#Question id: 2675

Which of the following statements regarding the trp operon is true?

#Unit 2. Cellular Organization

  1. The operator region produces the mRNA that codes for the repressor.

  2. Repressor proteins are inactivated by the presence of the repressor.

  3. The regulatory gene is not transcribed in the presence of the repressor.

  4. The trp operon is always activated unless deactivated by a repressor.

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TLS Online TPP Program

#Question id: 28042

#Unit 1. Structure and Function of Biomolecules

Thermodynamic measurements indicate that native proteins are only marginally stable under physiological conditions, The free energy required to denature them is ∼0.4 kJ∙mol−1 per amino acid residue so which of the following is true for so a fully folded 100-residue protein
TLS Online TPP Program

#Question id: 28043

#Unit 1. Structure and Function of Biomolecules

Which of the following statement holds true for the hydrogen and hydrophobic interaction in protein folding 
(1) The Hydrophobic Effect Has the minimal Influence on Protein Stability
(2) The Hydrophobic Effect Has the Greatest Influence on Protein Stability
(3) Hydrogen bonds, which are central features of protein structures, make only minor contributions to protein stability
(4) Hydrogen bonds, which are central features of protein structures, makes major contributions to protein stability
TLS Online TPP Program

#Question id: 28044

#Unit 1. Structure and Function of Biomolecules

Which one of the following is INCORRECT about protein structures?
TLS Online TPP Program

#Question id: 28045

#Unit 1. Structure and Function of Biomolecules

Native proteins are 
TLS Online TPP Program

#Question id: 28046

#Unit 1. Structure and Function of Biomolecules

Protein stability depend on interactions which one of the following is correctly representing the increasing order of contribution
TLS Online TPP Program

#Question id: 28047

#Unit 1. Structure and Function of Biomolecules

Protein A will fold into its native state only when protein B is also present in the solution. However, protein B can fold itself into native confirmation without the presence of protein A. Which of the following is true?