Spot the difference puzzles are sometimes known as 'Photo hunt' games. The goal is to find a number of differences between two near-identical images, which may be drawings, computer graphics, or photographs. SpotTheDifference.com offers you a massive selection of puzzles and games at all levels of difficulty.
The catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism.he catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme, catalase, is produced by bacteria that respire using oxygen, and protects them from the toxic by-products of oxygen metabolism.
Catalase Test: A. Enterococcus faecalis-This organism is negative for catalase. B. Escherichia coli-The bubbles indicate E. coli is positive for catalase.Oxidase Test: A. Pseudomonas aeruginosa-Purple color indicates positive. B. Escherichia coli-Negative.atalase Test: A. Enterococcus faecalis-This organism is negative for catalase. B. Escherichia coli-The bubbles indicate E. coli is positive for catalase.