Cell biology - study of whole cells and their organelles Molecular Biology - study of the molecules & their interactions in the cell Molecular genetics - study of the genes at their molecular...
The branch of biology that deals with the formation, structure, and function of macromolecules essential to life, such as nucleic acids and proteins, and especially with their role in cell...
Genetics is the study of patterns of inheritance and dates back to Mendel. http://en.wikipedia.org/wiki/Gregor_Mendel
Molecular genetics is DNA/RNA etc..
just reg. elementry biology can help you study molecular molecules. go ahead and look on ask jeeves "kids", it's a much better place for excellent homework questions.