Biochemistry acid base help
A patient was brought into the emergency room in obvious pain in the abdominal area. Breathing rate appears to be normal, but the patient does have a fever and heart rate is elevated. Arterial blood was sampled and revealed the following (normal values are in parentheses): pH 7.22 (7.40 plusminus 0.05) pCO_2 30 mm Hg (40 mm Hg) pO_2 70 mm Hg (90 - 100 mm Hg) Hemoglobin - O_2 saturation 88 % (94 - 100 %) [HCO_3-] 2 meq/liter (24 meq/liter) How would you classify this patient's acid-base status? (choose the one best answer) a) respiratory acidosis b) respiratory alkalosis c) metabolic acidosis d) metabolic alkalosis The net charge on an average molecule of an acidic amino acid such as glutamic acid at pH = 7 would be (choose one best answer) a) -2 b) -1 c) 0 d) +1 e) +2 What is the conjugate acid of H_2PO_4^-? Choose the one best answer. a) H_3PO_4 b) H_2 PO_4^- c) HPO_4^2- d) OH^- e) H_3 O^+ Phosphoric acid, H_3 PO_4, is a triprotic acid with pK's 2.12, 6.82 and 12.54. Which of the following pH's would be in the buffering range for phosphate buffers? Choose all correct answers. a) pH 3 b) pH 5 c) pH 7 d) pH 12 e) pH 4 f) pH 11 Lysine is a polar, basic amino acid. Which of the following is the closest to the expected isoelectric pH (pl) for lysine? (Choose the one most correct answer) a) pl = 1; b) pl = 4; c) pl = 6; d) pl = 9.8; e) pl = 11;