We also add a single amino acid to each batch of decarboxylase broth. The three amino acids we test in our decarboxylase media are arginine, lysine, and ornithine. The decarboxylase test is useful for differentiating the Enterobacteriaceae.
The shock of a basket or a dunk is absorbed by the connecting part, so that the rim goes back to a horizontal position once again. The top of the hoop is 10 feet above the ground. Regulation backboards are 6 feet wide (72 inches) by 42 inches tall. All basketball rims (hoops) are 18 inches in diameter. The inner rectangle on the backboard is 24 inches wide by 18 inches tall.
Modern Dimensions. The modern basketball backboard is 6 feet wide and 3Â½ feet tall, according to NBA and NCAA rules, although the NCAA permits backboards as tall as 4 feet. Backboards must be flat and transparent. Each backboard contains a 24-inch-wide by 18-inch-tall rectangle painted on the surface above the basket.