10 Questions
Why do non-polar molecules poorly dissolve in water?
Non-polar molecules repel water molecules due to hydrophobic interactions.
Which type of interaction is responsible for the hydrophobic effect in biological systems?
Van der Waals interactions
What is the main consequence of ice having a lower density than liquid water?
Ice floats on water surfaces.
Which type of forces dominate at very short distances in van der Waals interactions?
Repulsive forces
What is the significance of hydrogen bonds between complementary bases of DNA?
Stabilizes the DNA molecule's double-helix structure
What type of solute molecules dissolve better at low temperatures, according to the text?
Polar molecules
What phenomenon describes the dispersion of lipid molecules in a solution with their nonpolar tails surrounded by ordered water molecules?
Micelle formation
Which property of solutions like boiling point, melting point, and osmolarity do not strongly depend on the nature of the dissolved substance?
Colligative properties
What is the term used for the effect where hydrophobic groups are sequestered from water by an ordered shell of water molecules to increase entropy?
Hydrophobic effect
What process involves highly ordered water molecules forming 'cages' around hydrophobic alkyl chains?
Micelle formation
Explore the importance of hydrogen bonds and their role in creating unique properties of water, as well as the structure and function of proteins, DNA, and polysaccharides. Learn about the binding of substrates to enzymes, hormones to receptors, and the matching of mRNA and tRNA.
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