The Carbohydrate Fermentation test uses Phenol Red Broth to test for the fermentation of different sugars. It is one of the fermentation tests, others include the Methyl Red test and the Voges-Proskauer test.
The main reason why we use hexadecimal numbers is because it is much easier to express binary number representations in hex than it is in any other base number system. Computers do not actually work in hex (donât laugh, beginning students do ask that question). Lets look at an example, using a byte.
Why base-16 is called hex. chrisname (7398). Though the behaviour is considered bad practice when done to excess, programmers sometimes need to embed constants in their programs. These magic numbers were historically written in base-16, and the tradition has lasted to this very day.A hex is a magical spell, so magic numbers, when written in base-16, are therefore  hex numbers. Hex was later combined with the word decimal to indicate that it was a numeric base, hence hexadecimal.Later, the Greeks used the words heks and deka to mean six and ten respectively (from hex a dec imal and because base- 16 = 6 + 10).ex was later combined with the word decimal to indicate that it was a numeric base, hence hexadecimal. Later, the Greeks used the words heks and deka to mean six and ten respectively (from hex a dec imal and because base- 16 = 6 + 10).