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.
The National Basketball Association, or NBA, added the three-point shot in 1979. Previously, all baskets scored two points. The three-point shot gives teams the opportunity to reduce a large deficit quickly, and also forces defenses to spread out to guard the three-point line. The NBA boasts the farthest three-point line in basketball at 22- to 23-feet-9 inches away as you go around the arc.