A liver cell and a cheek cell have the same chromosomes. The only cells in the human body that do not contain 46 chromosomes are reproductive cells, which only contain 23 chromosomes, according to... Star Gazing
A beef roast cooked to medium-rare should have an internal temperature of 145Â°F - 150ÂºF after the resting period, and a roast cooked to medium should have an internal temperature of 150Â°F to 160ÂºF. (See the note below). See Beef Doneness for more information on proper cooking temperatures.
2. Roast for 15 minutes. Reduce the oven temperature to 375Â°F (190Â°C) and roast to the desired doneness, allowing 15 minutes per 1lb (450g) plus 15 minutes for medium-rare beef. A meat thermometer inserted in the thickest part of the roast will read 130Â°F (55Â°C).