Podcast
Questions and Answers
Why do non-polar molecules poorly dissolve in water?
Why do non-polar molecules poorly dissolve in water?
- Non-polar molecules attract water molecules due to hydrogen bonding.
- Non-polar molecules have a high affinity for water molecules due to ionic interactions.
- Non-polar molecules form covalent bonds with water molecules.
- Non-polar molecules repel water molecules due to hydrophobic interactions. (correct)
Which type of interaction is responsible for the hydrophobic effect in biological systems?
Which type of interaction is responsible for the hydrophobic effect in biological systems?
- Van der Waals interactions (correct)
- Ionic interactions
- Covalent bonds
- Hydrogen bonding
What is the main consequence of ice having a lower density than liquid water?
What is the main consequence of ice having a lower density than liquid water?
- Ice floats on water surfaces. (correct)
- Ice cannot float on water surfaces.
- Ice has a higher entropy than liquid water.
- Ice does not form a regular lattice structure.
Which type of forces dominate at very short distances in van der Waals interactions?
Which type of forces dominate at very short distances in van der Waals interactions?
What is the significance of hydrogen bonds between complementary bases of DNA?
What is the significance of hydrogen bonds between complementary bases of DNA?
What type of solute molecules dissolve better at low temperatures, according to the text?
What type of solute molecules dissolve better at low temperatures, according to the text?
What phenomenon describes the dispersion of lipid molecules in a solution with their nonpolar tails surrounded by ordered water molecules?
What phenomenon describes the dispersion of lipid molecules in a solution with their nonpolar tails surrounded by ordered water molecules?
Which property of solutions like boiling point, melting point, and osmolarity do not strongly depend on the nature of the dissolved substance?
Which property of solutions like boiling point, melting point, and osmolarity do not strongly depend on the nature of the dissolved substance?
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?
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?
What process involves highly ordered water molecules forming 'cages' around hydrophobic alkyl chains?
What process involves highly ordered water molecules forming 'cages' around hydrophobic alkyl chains?
