Which of the following diets would most likely promote the formation of ketone bodies? a. high simple carbohydrates, low fat b. high complex carbohydrates, high fructose c. high fat, high protein, low carbohydrate d. low fat, high protein, high complex carbohydrates e. high fructose: high whole grain carbohydrates The amino acids Ala, Cys, Gly, Ser, and Thr are all degraded to the metabolic intermediate ___ and are considered ____. a. acetyl-CoA: glucogenic b. acetyl-CoA: ketogenic c. pyruvate: glucogenic d. pyruvate: ketogenic e. acetoacetate: ketogenic Which of the following glycolytic intermediates is the common precursor to serine, cysteine, and glycine? a. fructose-6-phosphate b. glyceraldehyde-3-phosphate c. dihydroxyacetone phosphate d. 3-phosphoglycerate e pyruvate Nitrogen fixation is: a. the reduction of NADH b. the reduction of N_2 to ammonia c. the formation of diimine from hydrazine d. the production of elemental nitrogen e. none of the above In signal transduction resulting from a ligand-gated ion channel receptor in neuromuscular junctions, ____ diffuses across the synaptic cleft and binds receptors on neuromuscular junctions, muscle cell. This allows the ligand-gated ion channel to open releasing ions into the cell such as _____ which causes muscle contraction. a. acetylcholine: Na+ and Cl- b. serotonin: Na+ and Cl- c. acetylcholine: K+ and Na+ d. troponin: K+ and Na+ e. serotonin: K+ and Na+
