Exam 2: The Chemical Level of Organization

The phospholipids that make up the plasma membranes of body cells have a ___ head region and a ___ tail region, a quality essential for the formation of the "lipid bilayer."

The energy needed to break an existing chemical bond or to form a new chemical bond is called the ___.

This term is defined as the capacity to do work.

Ions are formed when atoms gain or lose one or more valence electrons and become positively or negatively charged.

Which of the following would be regarded as an organic molecule?

This type of lipid is the body's long-term energy storage molecule.

Atoms with the same number of protons and a differing number of neutrons are ___.

The sugar part of the backbone of DNA strands is called deoxyribose.

List the six major functions of proteins.

Which of the following is one of the 4 major elements found in the body?

An enzyme acts to ___.

Which of these conducts an electric current?

Which of the following is a good example of an acidic bodily fluid in a healthy individual?

Describe a hydrogen bond.

This term refers to the average atomic mass of all the naturally occurring isotopes of an element.

How many carbons are in this structural formula?

List the three major properties of enzymes.

Which of these describes a function of adenosine triphosphate (ATP)?

A solute that dissolves in water is ___.

Which of the following is a monosaccharide that is important in producing energy?