An aircraft circumnavigates the earth 10 km above the earth’s surface. If it completes one full circle, the distance covered will be ______ greater than the circumference of the earth. […]
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Bacterial Growth: How Cell Mass Increases in 30 Minutes
A growing bacterial culture doubles in 1 hr; the increase in cell mass in 30 minutes will be: A. Zero, B. 50%, C. Less than 50%, D. More than 50%, […]
REGIONAL CENTRE FOR BIOTECHNOLOGY-Summer Research Internship
Applications invited for Summer Research Internship at RCB Regional Centre for Biotechnology (RCB) is an institution of national importance, created by an Act of Parliament, established by Government of India […]
Interpreting Hydrogen Bond Angles in Protein Structures
5. Hydrogen bonds in proteins occur when two electronegative atoms compete for the same hydrogen atom Donor-H…..Acceptor The angle ‘ Ꝋ ‘ between donor and acceptor of a hydrogen bond […]
Solubility of Protein X in Solutions of Ammonium Sulfate
4. Protein X is an all helical protein with 100 amino acids including 2 cysteines and a pl of 7.0. Which one of the following graphs best describes the solubility […]
Investigating the Stability of Proteins Under Different Conditions
A researcher investigated the a set of conditions for a protein with an isoelectric point of 6.5 and also bind to subjected to four calcium. This protein was independent treatments: […]
The Stability of Proteins: Implications of Amino Acid Replacement
A researcher has developed a program to evaluate the stability of a protein by substituting each amino acid at a time by the other 19 amino acids. For a protein, […]
How Glycerol Stabilizes Solutions of Proteins
Glycerol is added to protein solutions to stabilize the preparations by (1) increasing the viscosity of solution (2) stabilizing the pH (3) preferential hydration of proteins (4) interacting and neutralising […]
Various Types of Molecular Interactions
Match the following bonds with their approximate energies: (1) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) (2) (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv) (3) (a)-(i), (b)-(iv), (c)-(ii), (d)-(iii) (4) (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii) Introduction to […]
Most Distance-Sensitive Non-Covalent Interaction Between Atoms
Which one of the following non-covalent interactions between two non-bonded atoms A and B is most sensitive to the distance between them? (1) A and B are permanent dipoles and […]


