Which of the following solutions is the most acidic? The one with the pH of ____________.

The “functional group” found on organic molecules 

Cells having no nucleus would belong to the

How many species have been identified and named?  Approximately  

Evidence of previously existing life is found in

Which one of the following is TRUE with regard to the numbers of subatomic particles in an atom?

When a positively charged hydrogen in a water molecule become attracted to the negatively charged oxygen in a nearby water molecule, this is called a ionic bond.

List the parts of the scientific method.

Which of the following would be considered the most common element (by weight)  in living things?

All single-celled organisms are prokaryotes