All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology
Properties of Water
Acids and Bases
Additional Practice
Calculating pH

Concept #1: Polar Properties

Concept #2: Thermal Properties

Practice: A solution in which water is the solvent is called a(n) _________________.

Practice: Things that have an affinity for water are:

The partial polarity of water molecules: a. promotes formation of hydrogen bonds b. helps water dissolve nonpolar solutes c. lowers heat of vaporization d. none of these choices is correct e. more than one of the choices is correct
Ice floats on water because:  a. The molecules are closer together in ice than in water b. The molecules are farther apart in ice than in water c. Ice is more dense than water
Water is best described as which of the following?  a. An ion b. A non-polar molecule c. An atom d. A polar molecule e. An element
Individual water molecules bind to each other through:  a. Covalent bonds b. Ionic bonds c. Hydrogen bonds d. Hydrophobic bonds e. Non-polar bonds
Within a single molecule of water, ____ bonds are formed between oxygen and hydrogen.a. Ionic bondsb. Covalent bondsc. Hydrogen bondsd. Hydrophobic bonds
The emergent properties of water (cohesion, high heat capacity, good solvent) come from the fact that water is ______ and ______ hydrogen bond. a. polar, can b. polar, cannot c. non-polar, can d. non-polar, cannot
Cohesion is a property of water in which water molecules tend to stick together.  a. True b. False
A substance in which other substances dissolve is called a solute.  a. True b. False
If ice were more dense than water, then during the winter most organisms living in ponds and lakes in colder climates would become entrapped in ice and freeze.  a. True b. False
Water is the most abundant molecule within cells. Describe the molecular properties of its structure as it is important for predicting its interaction with other molecules within the cell.
Define the terms hydrophobic and hydrophilic. Which of the two form hydrogen bonds with the surrounding water molecules? What does this mean in terms of solubility in water?
List water's four properties that make it such a good solvent.
Our stock solution of CaCl2 is at a concentration of 500mM. How much stock CaCl2 must be added to 10mL of blood to achieve a final concentration of 50mM.
Using your favorite method, find the MOLARITY of a fructose solution C6H12O6 containing 400g of fructose in 5000mL of water.