Materials move in and out of the nucleus through the __________.

Potassium ions (K+) are attracted to Chloride ions (Cl-). What type of bond are they forming?

The nucleus of the eukaryotic cell functions: 

A threadlike structure found in both animal and bacterial cells that aids in locomotion.

When water freezes into a solid, it’s molecules are packed together ________ densely than in a liquid state.

If an element has an atomic number of 6 and a mass number of 14, how many neutrons does it have? 

Nucleotides are linked together by a ____________ reaction between the _____________ of one nucleotide and the ____________ of the next nucleotide. 

The different populations of all the species in a given area make up a(n): 

Which functional groups are found in ALL amino acids?

A solution with a pH of 4 has _________ the concentration of H+ present compared to a solution with a pH of 5.