TLS Online TPP Program

#Question id: 27388


Electron affinity is the

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Energy absorbed when an electron is added to an isolated atom in the gaseous state
  2. Energy released when an electron is added to an isolated atom in the gaseous state
  3. Energy required to take out an electron from an isolated gaseous atom
  4. Power of an atom to attract an electron to itself
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TLS Online TPP Program

#Question id: 10901

#Unit 6. System Physiology – Plant

P-proteins have been characterized at the molecular level. P-proteins from the genus Cucurbita consist of two major proteins;

TLS Online TPP Program

#Question id: 2871

#Unit 2. Cellular Organization

With respect to X-chromosome inactivation in females, which, if any, of the following statements is incorrect?

TLS Online TPP Program

#Question id: 5689

#Unit 8. Inheritance Biology

What kind of aneuploidy gamete will be generated if meiotic nondisjuction in second division (n represent haploid number of chromosome )

TLS Online TPP Program

#Question id: 2072

#Unit 2. Cellular Organization

Which of the following structures would decrease the electrochemical gradient across a membrane?

TLS Online TPP Program

#Question id: 879

#Unit 1. Molecules and their Interaction Relevant to Biology

 Correct approaches to protein structure prediction-:

i. Homology modeling

a) 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.

ii. Structural genomics

b) which seeks to determine the X-ray structures of all representative domains, is aimed at expanding this predictive technique. The identification of structural homology is likely to provide clues as to a protein’s function even with imperfect structure prediction.

iii. Threading

c) Is a computational technique that attempts to determine the unknown structure of a protein by ascertaining whether it is consistent with a known protein structure. It does so by placing the unknown protein’s residues along the backbone of a known protein structure and then determining whether the amino acid side chains of the unknown protein are stable in that arrangement

iv. Ab initio

d) Aligns the sequence of interest with the sequence of a homologous protein or domain of known structure—compensating for amino acid substitutions, insertions, and deletions—through modeling and energy minimization calculations.