An electron microscope uses a beam of electrons in order to see very small and detailed components. These electrons are in fact negatively charged particles.
This type of microscope would allow you to see small components such as ribosomes and other organelles inside a cell.
Humans cannot digest cellulose, but it is important in the diet as fibre. Fibre assists your digestive system – keeping food moving through the gut and pushing waste out of the body.
Use of oil and vinegar prevents spoilage of pickles because bacteria cannot live in such an environment. Vegetables, fruits, fish and meat are often preserved by this method.
