21. If van der Waals interaction is described by the following relation. Where ΔGvan is the free energy of the van der Waals interaction, A and B are constants, r […]
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Weakest bond in biochemistry
There are various types of bonds in biochemistry like covalent bond, Ionic bond, Vanderwaals and hydrogen bond. Among the following the weakest bond is (1) Ionic bond (2) covalent bond […]
Interactions That Stabilize Biological Membranes
Predominant interactions between phospholipids that stabilize a biological membrane include (1) hydrogen bonds and covalent interactions. (2) van der Waal and ionic interactions. (3) hydrophobic interactions and hydrogen bonding. (4) […]
Free Energy, Bonding & Hydrophobic Interactions
From the following statements, A. For a reaction to occur spontaneously the free energy change must be negative B. The interaction between two nitrogen molecules in the gaseous state is […]
Solubility of Gases in Water: Which Gas Dissolves the Most?
The solubility of gases in water depends on their interaction with water molecules, Four gases i.e. carbon dioxide, oxygen, sulphur dioxide and ammonia are dissolved in water. In terms of […]
Relationship Between Free Energy (ΔG) and Solute Concentration in Solutions
The free energy ΔG of a dissolved solute (1) Increases with solute concentration. (2) decreases with solute concentration (3) is independent of solute concentration. (4) depends only on temperature. Relationship […]
Effect of Arginine Replacement on Ionic Bond Strength in Biomolecules
A strong ionic bond is present in R-chains of arginine and aspartic acid. This bond will be weakest if arginine is being replaced by- (1) Glutamic Acid (2) Lysine (3) […]
Highest Contributing Interaction in a Nonpolar Environment
On the molar scale which of the following interaction in a nonpolar environment provides the highest contribution to the bio-molecule? (1) van der Walls interaction (2) Hydrogen bonding (3) Salt […]
Interaction Energy Between Opposite Charges in Water vs. Vacuum
The interaction energy between two opposite charges separated by 3Å in vacuum is -500 kJmol-1. The interaction energy between these two charges in water will be closest to (1) -1500 […]
Water Weakens Electrostatic Interactions: Coulomb’s Law Explained
How Does Water Affect Electrostatic Interactions? Coulomb’s law explains the force between two charged particles, but the solvent environment plays a crucial role in determining the strength of this interaction. […]


