Which of the following statements are true of the use of food molecules other than glucose in cell respiration? (Read carefully and select all of the correct statements.)

A)An amino acid may be changed to pyruvic acid to enter the Krebs cycle.
B)Glycerol is a small molecule that can go directly to the cytochromes.
C)An amino acid may be changed to an acetyl group to enter the Krebs cycle.
D)Fatty acids are changed to pyruvic acid in the process of beta-oxidation.
E)The process of beta-oxidation takes place primarily in the pancreas.
F)Both fatty acids and amino acids may be changed to ketones.