#Question id: 731
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following structure is mentioned in the given Ramachandran plot
#Question id: 3006
#Unit 2. Cellular Organization
A bacterial population increases from 103 cells to 109 cells in 10 h. Calculate the number of generation time in minute.
#Question id: 879
#Unit 1. Molecules and their Interaction Relevant to Biology
Correct approaches to protein structure prediction-:
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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. |
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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. |
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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 |
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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. |
#Question id: 10420
#Unit 6. System Physiology – Plant
A toggle model has been proposed for phytochrome interconversion, according to this model which option is correct?
#Question id: 4986
#Unit 11. Evolution and Behavior
A female fly, full of fertilized eggs, is swept by high winds to an island far out to sea. She is the first fly to arrive on this island, and the only fly to arrive in this way. Thousands of years later, her numerous offspring occupy the island, but none of them resembles her. There are, instead, several species each of which eats only a certain type of food. None of the species can fly, for their flight wings are absent, and their balancing organs (i.e., halteres) are now used in courtship displays. The male members of each species bear modified halteres that are unique in appearance to their species. Females bear vestigial halteres. The ranges of all of the daughter species overlap. If these fly species lost the ability to fly independently of each other as a result of separate mutation events in each lineage, then the flightless condition in these species could be an example of