所屬科目:研究所、轉學考(插大)-普通生物學
21. Based on the tree below, which statement is correct? (A) Lizards and goats form a sister group. (B) Salamanders are a sister group to the group containing lizards, goats, and humans. (C) Salamanders are more closely related to lizards than to humans. (D) Goats and humans are the only sister group shown in this tree.
42. Consider the following reaction. Which of the following would happen if the pH of the blood was decreased?(A)the amount of carbon dioxide would increase (B)the bicarbonate concentration in the blood would increase (C)the amount of oxygen in the blood will decrease (D) the amount of protons in the blood will increase