Prepare for the Foundations of Biology Exam 1. Dive into key biological concepts with multiple choice questions, hints, and explanations. Ace the exam with our efficient study methods!

Multiple Choice

Hydrogen bonding in liquid water leads to which property?

Hydrogen bonding between water molecules creates cohesive forces that pull molecules toward one another. Water is a polar molecule, with partial negative charge on oxygen and partial positive charges on hydrogen. The positive end of one molecule can form a hydrogen bond with the lone pair on the oxygen of a neighboring molecule, creating a network of transient but ongoing attractions. This cohesion makes water stick to itself, producing surface tension and the ability to form droplets and move as a continuous stream in plants. Color isn’t produced by hydrogen bonding; it comes from how light interacts with water’s electrons and any impurities. Conductivity in pure liquid water is very low because there aren’t many free ions to carry charge, so hydrogen bonds don’t make it a conductor. Rigidity describes a solid lattice, as seen in ice, where a more stable hydrogen-bond network forms; in the liquid, bonds continually break and reform, so water remains fluid.

Hydrogen bonding between water molecules creates cohesive forces that pull molecules toward one another. Water is a polar molecule, with partial negative charge on oxygen and partial positive charges on hydrogen. The positive end of one molecule can form a hydrogen bond with the lone pair on the oxygen of a neighboring molecule, creating a network of transient but ongoing attractions. This cohesion makes water stick to itself, producing surface tension and the ability to form droplets and move as a continuous stream in plants.

Color isn’t produced by hydrogen bonding; it comes from how light interacts with water’s electrons and any impurities. Conductivity in pure liquid water is very low because there aren’t many free ions to carry charge, so hydrogen bonds don’t make it a conductor. Rigidity describes a solid lattice, as seen in ice, where a more stable hydrogen-bond network forms; in the liquid, bonds continually break and reform, so water remains fluid.