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.
Add the beef broth to the pan and place in the oven, uncovered. Roast until the beef is tender and registers an internal temperature of 130 to 135 degrees F, about 1 1/2 to 2 hours. Transfer the roast to a platter or cutting board and let rest for 15 minutes before carving.