I have already declared in my experience part that I will discuss about "100 confusing topics". This is the First one for you- Surely you may get 4/5 marks more from this topics in the real test because it is very very high yield topics. Topic 1: Fatty acid catabolism 1. Hypoketotic hypoglycemia with intracellular fatty acyl carnitines on muscle biopsy- it may be LCAD or MCAD deficiency. If question says carnitine is present, that means carnitine can't be deficient, because if it were, then you would only get fatty acyl-CoA derivatives but not anything carnitines related. Therefore, the answer here would be MCAD or LCAD deficiency. 2. Intestinal FA that are 12 or more carbons in length are absorbed in lymph and bypass liver. 12+ carbon FA are termed long chain. So, if the question stem mentions the classic hypoketotic hypoglycemia and then tells you the build up of 16C FA like palmitic acid, than the answer is LCAD deficiency, not MCAD deficiency. 3. Acetyl...