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.
1 Here are internal temperatures for judging the stage the bottom round beef roast is at: 120 degrees to 125 degrees for rare; 130 degrees to 140 degrees for medium rare; 145 degrees to 150 degree for medium; 155 degrees to 165 degrees for well done.