which of the following solvents would NOT dissolve lipids and why? a. Hot ethanol - because this solvent is polar b. Chloroform - because this solvent is polar c. Water - because this solvent is polar d. hexane - because this solvent is non-polar

One of the most important properties of water is that it can form a _______ with other water molecules. This means that water molecules are able to “stick together” to a certain extent. The term for this property is cohesion. A. Ionic bond B. Covalent Bond C. Hydrogen Bond

Answer the following about drawing the attractive force between a water molecule (H2O) and an ammonium ion (NH4*). The on the O in the water molecule is attracted to the of the ammonium ion. a. partial + charge b. partial - charge c. full + charge d. full - charge

Which of the following is removed when tea is brewed in hot water? A. Cellulose B. Tannins C. Glucose D. Caffeine E. Sodium bicarbonate

Why are water and its derivatives useful as buffers in the cell cytoplasm?   A. H3O+ can serve as a strong base.   B. H2O can make hydrogen bonds.   C. H20 can serve as a strong acid and as a strong base.   D. H20 can serve as a weak acid and OH- can serve as a weak base.   E. H20 can serve as a weak base and as a weak acid.

The type of bonding that happens between atoms within a water molecule is which of the following? a. Polar covalent bonding b.ionic bonding c. Non polar covalent bonding  d. Hydrogen bonding

Which of the following best describes a solution with a pH of 9?    A. it would have 100 times more free hydrogen ions than a solution with a pH of 7  B. it would have half as many hydrogen ions as a solution with a pH of 7  C. it would be classified as a base  D. it would be classified as an acid