Exam 2: Molecules of Life

____ is the tendency of water molecules to stay attached to one another.​

Two amino acids are bonded together to form a dipeptide by which type of reaction?

Humans do not contain the enzymes to break down ____.​

The nucleus of an atom contains ____.​

Hydrogen bonding ____ the movement of molecules, therefore, substances that form a lot of hydrogen bonds, like water, will require ____ energy to increase their temperature by one degree Celsius.

In a cell membrane, the phospholipid heads are ____.​

Match the following terms to the correct description. -substance that releases hydrogen ions in solution A)acid B)base C)neutral D)buffer E)pH

In ____ bonds, atoms share electrons equally.​

Which type of bonds hold the two chains of DNA together in a DNA molecule?​

Surface tension is an example of ____.​

Which property of water molecules is responsible for movement of water from roots to leaves in a plant?​

Sucrose is composed of ____.​

Protein misfolding causes ____.

The following are types of chemical bonds. Match these to the correct description. (The bonds may fit more than one description.) -​the bond between the hydrogen atoms of molecular hydrogen A)hydrogen B)ionic C)covalent

What category of compounds helps our body fluids to stay within a consistent pH range?​

Match the structures with the appropriate label in the given figure. -​fatty acid A)A B)B C)C D)D E)E F)F G)G

The positive subatomic particle is the ____.​

The structural formula for molecular oxygen is depicted as O=O. What kind of bond holds molecular oxygen together?​

Match the following terms to the correct description. -substance that can maintain the pH of a solution at a relatively constant level A)acid B)base C)neutral D)buffer E)pH

A solution at a pH of 10 contains how many times more hydrogen ions than a solution at a pH of 7?​