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TLS Online TPP Program

#Question id: 9265

To apply parsimony to constructing a phylogenetic tree,

#Unit 9. Diversity of Life Forms
  1. choose the tree that assumes all evolutionary changes are equally probable.
  2. choose the tree in which the branch points are based on as many shared derived characters as possible.
  3. choose the tree that represents the fewest evolutionary changes, in either DNA sequences or morphology.
  4. choose the tree with the fewest branch points.
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TLS Online TPP Program

#Question id: 28039

#Unit 1. Molecules and their Interaction Relevant to Biology

Proteins particularly those with molecular masses >100 kD, consist of more than one polypeptide chain. These polypeptide subunits associate with a specific geometry. The spatial arrangement of these subunits is known as 
TLS Online TPP Program

#Question id: 28040

#Unit 1. Molecules and their Interaction Relevant to Biology

Cyclic symmetries, Dihedral symmetries, Tetrahedral symmetry, Octahedral (cubic) symmetry, Icosahedral symmetry these symmetry arises as a result of 
TLS Online TPP Program

#Question id: 28041

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following interaction majorly contribute to protein stability
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?