Experiment 5 with yeast supported the claim that anaerobic respiration was taking place. the experiment was repeated using unboiled water and without the liquid paraffin. fermentation still took place and carbon dioxide was produced. does this mean that the design or the interpretation of the first experiment was wrong? explain your answer.

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.