Hemoglobin is a protein that has a quaternary structure because it is composed of four subunits, but not all proteins have quaternary structure.  

Numerical answer.  How many electrons can the first shell hold?

Proteins have many functions.  Discuss an example of a protein function, naming a specific protein with this function, and explain why this protein is important to an organism. 

Which of the following are NOT found in both RNA and DNA?

Anabolic reactions convert small molecules into larger ones.

Animals can store excess glucose in what form?

In an experiment, this is the measured response that is of interest to the researcher.  

The atomic number of carbon is 6 and the atomic mass is 12.01.  How many neutrons does carbon-12 have?

Which of the following was the first organic molecule to be synthesized artificially?

A cell has a cell wall, cytoplasm, and no nucleus.  This cell is —