Here it says, "Which of the following statements is true? Lipid and Protein Metabolism Provide the Only Catabolic Pathways to Acetyl CoA Formation." That statement is false. We know that carbohydrates, when digested, can also provide another catabolic pathway to Acetyl CoA formation. So, this statement is false.
Here, a transaminase is the class of enzymes that catalyzes transamination reactions. The name gives it away. This is what this enzyme is intended to do. Remember, in a transamination reaction, we are exchanging, in a reversible reaction, the amino group of an amino acid with the keto group of an alpha-keto acid. So, this statement is true.
When glycogen stores are at max levels, fatty acids are degraded for energy. No. If you have a surplus of carbohydrates or sugars, we break that down first to gain energy.
Alanine and alpha-ketoglutarate reacting to form pyruvate and glutamate represents an oxidative deamination. Remember, in an oxidative deamination, we have glutamate undergoing oxidation to create alpha-ketoglutarate. We use NAD positive in order to do this. This is saying the opposite. So here it's saying that we're using alpha-ketoglutarate to make glutamate when it should be reversed. That is what oxidative deamination is.
So here, the only statement that is true would have to be option B.