Paint and image-editing software, such as Adobe Photoshop, generate bitmap images (not to be confused with the Photoshop Bitmap color mode), also called raster images. The images use a grid of small squares, known as pixels, to represent graphics.
Inflamed tonsils. Tonsillitis is most often caused by common viruses, but bacterial infections can also be the cause. The most common bacterium causing tonsillitis is Streptococcus pyogenes (group A streptococcus), the bacterium that causes strep throat.Other strains of strep and other bacteria also may cause tonsillitis.onsillitis is most often caused by common viruses, but bacterial infections can also be the cause.
Bacteria cause bacterial infections and viruses cause viral infections. Antibiotic drugs usually kill bacteria, but they are not effective against viruses. Infections caused by bacteria include strep throat, tuberculosis and urinary tract infections. Diseases caused by viruses include chickenpox, AIDS and common colds.In some cases, it may be difficult to determine whether a bacterium or a virus is causing your symptoms.nfections caused by bacteria include strep throat, tuberculosis and urinary tract infections. Diseases caused by viruses include chickenpox, AIDS and common colds. In some cases, it may be difficult to determine whether a bacterium or a virus is causing your symptoms.