Chapter 3 & 5 AP Bio Study Guide - Chemistry of Biology

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Hydrophilic

Back

Having an affinity for water; substances that are hydrophilic tend to dissolve in water.

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Cohesion

Back

The linking together of like molecules, often by hydrogen bonds; for example, water molecules are attracted to each other.

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Box and whiskers plot

Back

A graphical method of displaying variation in a set of data, showing the median, quartiles, and outliers.

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Example of cohesion

Back

Water molecules are attracted to each other.

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Adhesion

Back

The clinging of one substance to another, such as water to plant cell walls, often through hydrogen bonds.

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Hydrophobic

Back

Having an aversion to water; substances that are hydrophobic do not mix well with water.

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Polarity

Back

A property of molecules that have a positive and negative end; water is a polar molecule.

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Aqueous solution

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A solution in which water is the solvent.

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Hydrogen bond

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A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.

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Surface tension

Back

The cohesive force at the surface of a liquid that makes it behave like a stretched elastic membrane.