Biology 1113 - Exam 1 (Pearson Textbook)

Chapters 2.2 - 7

____ % of the volume in a typical cell is water

75

Solvent

Agent for dissolving/Any liquid in which one or more solids or gases can dissolve

Dissolving

Getting substances into solution

Solution

A liquid containing one or more dissolved solids or gases in a homogenous mixture

The reactions that were responsible for chemical evolution and those occurring in your body right now depend on _____

Direct, physical interaction between molecules

Substances are more likely to come into contact with each other and react when ______

They are solutes

Solutes

Any substance that is dissolved in a liquid/solvent

Water Molecule Physical Structure

Small size, highly polar covalent bonds, bent shape, overall polarity

Structure directly affects ________

Function

In water, ______ has a partial negative charge

Oxygen (O)

In water, ______ has a partial positive charge

Hydrogen (H)

Water molecules have a ______ geometry

Bent

Hydrogen bond

An weak interaction between a hydrogen atom with a partial positive charge and another atom, usually oxygen or nitrogen, with a partial negative charge