TLS Online TPP Program

#Question id: 12972


Under  some  circumstances a  population  can  split  into  two  or  more  species  without  the  existence of  geographic barriers. All of the following genetically determined behaviours could provide conditions leading to speciation EXCEPT

#Unit 10. Ecological Principles
  1. Selection of a specific host fruit for completion of the life cycle by a fruit fly
  2. Association of courtship with a particular habitat type in a sparrow
  3. Choice by a butterfly of the time of day to breed
  4. Selection of prey types by a wide-ranging Hawk
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TLS Online TPP Program

#Question id: 849

#Unit 1. Molecules and their Interaction Relevant to Biology

The rigidity of the peptide unit and the restricted set of allowed phi and psi angles limits the number of structures accessible to the unfolded form sufficiently to allow:-

TLS Online TPP Program

#Question id: 850

#Unit 1. Molecules and their Interaction Relevant to Biology

The experimental inverse of protein structure prediction, has provided insights into protein folding and stability. Protein design attempts to construct an amino acid sequence that will form a structure such as a sandwich of β sheets or a bundle of α helices;

TLS Online TPP Program

#Question id: 851

#Unit 1. Molecules and their Interaction Relevant to Biology

Methods is the Rosetta program, formulated by David Baker. To satisfy the program’s computational needs, a volunteer network of ∼100,000 computers, known as Rosetta@home, provides the 500,000 or so hours of processing time required to generate a structure;

TLS Online TPP Program

#Question id: 852

#Unit 1. Molecules and their Interaction Relevant to Biology

.________ enzyme revealed the relation between the amino acid sequence of a protein and its conformation.

TLS Online TPP Program

#Question id: 853

#Unit 1. Molecules and their Interaction Relevant to Biology

In the presence of a large excess of _______ the disulfides (cystines) are fully converted into sulfhydryls (cysteines).

TLS Online TPP Program

#Question id: 856

#Unit 1. Molecules and their Interaction Relevant to Biology

Protein folding is not a completely random, trial-and-error process, This problem was first pointed out by