please answer all three

Part [2] of the citric acid cycle includes two separate decarboxylation reactions and a hydrolysis reaction. True False Question 49 (2 points) Which codon does not code for alanine? A) GAC B) GCG C) GCU D) GCC E) GCA Question 50 ( 2 points) At the end of the electron transport chain, the electrons and protons (obtained from the reduced coenzymes or the matrix of the mitochondrion) react with inhaled oxygen to form