Amylase, also called Ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine is the Enzyme present in Saliva.
Control Unit can perform the functions Interpret instructions, Execute instructions and Direct operations. But Reading instructions is not a function of the Control Unit.
In eukaryotic cells, DNA is located in the nucleus, chromosomes and the mitochondria. Most of the DNA is present in the nucleus and some amount in the chromosomes and mitochondria.