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TLS Online TPP Program

#Question id: 463

Thioesters are similar to oxygen esters of carboxylic acids except that

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. the energy associated with their hydrolysis is much less than that of the phosphoanhydride in ATP.

  2. they are more stable at neutral pH values in cells.

  3. they are less stable because S is present instead of O in the linkage.

  4. they are used in glycolysis and the citric acid cycle.

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TLS Online TPP Program

#Question id: 28042

#Unit 1. Molecules and their Interaction Relevant to Biology

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. Molecules and their Interaction Relevant to Biology

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. Molecules and their Interaction Relevant to Biology

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

#Question id: 28045

#Unit 1. Molecules and their Interaction Relevant to Biology

Native proteins are 
TLS Online TPP Program

#Question id: 28046

#Unit 1. Molecules and their Interaction Relevant to Biology

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. Molecules and their Interaction Relevant to Biology

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?