bio note

Introduction “Micro” refers to tiny, “scope” refers to view or look at. Microscope is the major tool of biologists, an optical instrument that uses lens or combination of lens to produce magnified images that are too small to seen by unaided eye. Microscope provides the enlarged view that helps in examining and analyzing the image. Through the use of microscope , knowledge of cell structure was gained and one of the fundamental theories of biology, the Cell Theory was developed. The function of any microscope is to enhance resolution. The microscope is used to create an enlarged view of an object such that we can observe details not otherwise possible with the human eye. Because of the enlargement, resolution is often confused with magnification, which refers to the size of an image. In general, the greater the magnification, the greater the resolution, but this is not always true. In order to ascertain the total magnification when viewing an image with a compound light microscope, take the power of the objective lens which is at 4x , 10x or 40x and multiply it by the power of the eyepiece which is typically 10x. Magnification is the ability to view an object as larger. A good image is obtained when the amount of specimen detail is also increased. Magnification alone will not achieve this. For learning the techniques and ways in using light microscope, this experiment using the example of red blood cell and white blood cell. Red blood cells play an important role in your health by carrying fresh oxygen throughout the body. The oxygen gives your blood its bright red color. The cytoplasm of erythrocytes is rich in hemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red color of the cells. The cell membrane is composed of proteins and lipids, and this structure provides properties essential for physiological cell function such as deformability and stability while traversing the