Examples of index fossils. Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages).
Methyl cellulose. Methyl cellulose (or methylcellulose) is a chemical compound derived from cellulose. It is a hydrophilic white powder in pure form and dissolves in cold (but not in hot) water, forming a clear viscous solution or gel.
Cellulose is sometimes made from cotton. Pat Canova/Photographer's Choice RF/Getty Images. Cellulose is a molecule comprised of carbon, hydrogen, and oxygen, and is found in the cellular structure of virtually all plant matter.This organic compound, which is considered the most abundant on earth, is even excreted by some bacteria.Cellulose provides structure and strength to the cell walls of plants and provides fiber in our diets. Although some animals, such as ruminants, can digest cellulose, humans cannot.alorie Reducer â Cellulose provides a lot of volume or bulk in food but because it is indigestible to humans, it has no caloric value. For this reason, cellulose has become a popular bulking agent in diet foods.