True or False:  A molecule’s shape is usually very important to its function.  A molecule’s shape is determined by the positions of its atoms’ valence orbitals.

True or False: When living organisms transform energy from one form to another, some energy is lost as heat.  Heat is a form of kinetic energy.

True or False: When living organisms transform energy from one form to another, some energy is lost as heat.  Heat is a form of potential energy.

In 1828, Friedrich Wohler synthesized urea from ammonium and cyanate ions to demonstrate that organic molecules can be synthesized outside of an organism.  However, the scientific community was still skeptical about this view of mechanism over vitalism.  What was the main reason behind their skepticism about the results of his experiment?

Steroid sex hormones such as estradiol and testosterone  are derived from:

Fats are composed of two types of smaller molecules.  These molecules are:

Most common form of regulation in living organisms is ___(1)___.  In ___(2)___, the end product speeds up its own production.

Which of the following is FALSE about the difference between DNA and RNA?

The family on the periodic table that is the most stable is:

Ethane represented in the following form is an example of __________________.