More Bio notes from next lesson on Cells and Microscopes.

Before Robert Hooke first glimpsed cells of cork in 1665, scientists knew they needed more than the human eye to study objects and living things. Microscopes provide a passport to the unseen world of how cells work, and how the whole organism functions. Magnification is the ability of a microscope to make an image appear bigger. Resolution is the ability to distinguish small, close objects. The resolution of a microscope refers to its ability to show …

…by a network of several kinds of protein fibers that supports the shape of the cell and anchors its organelles. This mesh like network is called the cytoskelton. Within the cytoskeleton, hollow protein fibers called microtubules aid in moving chromosomes during cell division y forming cylindrical organelles called centrioles. Protruding from the surfaces of many eukaryotic cells are long threadlike organelles called flagella, which are used in locomotion. Flagella are actually complex cables of microubules.