I'm not sure about these questions pls. help.

Why can't fatty acids DIRECTLY be metabolized to form glucose?
A) Because they are hydrophobic
B) Although pyruvate can be metabolized to Acetyl CoA, Acetyl CoA cannot be metabolized to pyrivate as this step is irrevesible
C) Because all fatty acids removed from triglycerides are metabolized to glycogen

During starvation, a decrease insulin to glucagon ration and a decrease in circulating substrates causes all of the following except?
A) Glycogenesis
B) Protein deamination
C) Gluconeogenesis
D) Lipolysis
E) Ketogenesis

The more recent and accepted theory regarding ATP production states that the aerobic metabolism of one glucose molecule results in the production of 30-32 ATP molecules by the electron transport chain. What causes the range of ATP production instead of a specific number of ATP produced?

A) The range indicates that sometimes each reoxidized NADH produces 3 ATP molecules versus 2.5 ATP molecules
B) The range indicates that sometimes each reoxidized FADH produces 2 ATP molecules versus 1.5 ATP molecules
C) The range indicates that sometimes NADH produced in the cytoplasm during glycolysis are transported into the mitochondria matrix and only stimulate the 2nd and 3rd pumps of the electron chain, like FADH, resulting in the production of only 1.5 ATP versus 2.5 ATP molecules.