For lipids to be fluid ( = liquid) at room temperature, they should have ________.

Which of the following is the basic building block for DNA?

Immediately after you place the blood cells into the beaker, which solution is hypotonic?

Oxygen atoms have eight protons.  The proper chemical name for an oxygen atom with seven electrons would be:

When do molecules in your body stop moving?

A neutral atom has no charge, because it has_______________

Ionic bonds are formed when:

Ions are formed when:

Fill in the blank: There are four most common chemical elements in all organisms. ___________is not one of them.

Which macromolecule stores energy, insulates us, and makes up the cell membrane