In the US, unless it specificly says "Cane Sugar" on the package it is probably beet sugar. They're both sucrose.
Glucose and Fructose (fruit sugar) are monosaccharides. They have the same chemical formula (C6H12O6) but different shapes.
Two monosaccharides combine to form a disaccharide and a water molecule is released. For example, one glucose and one fructose combine to form one sucrose (table sugar). Other disaccharides are lactose(milk sugar) and maltose(precursor to beer).
'La bonne cuisine est la base du véritable bonheur.' - Auguste Escoffier
(Good food is the foundation of genuine happiness.)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
Not likely. All the beet sugar plants in the area I grew up in went out of business long ago. The more productive cane sugar is cheaper to import than beet sugar is to produce domestically. Corn syrup is even cheaper.