A substance that minimizes changes in the concentrations of H+ and OH- in a solution is called a ______________.

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

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

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?

Animals can store excess glucose in what form?

What type of reaction connects a fatty acid to a glycerol molecule in triglyceride formation?

Polyunsaturated fats are often found in plants. 

The pH of pure water is — 

In the presence of water, can be broken down into adenosine diphosphate, inorganic phosphase, and .