Author: Anonymous

36) Birds secrete uric acid as their nitrogenous waste because uric acid ________.

8) Which of the following combinations of phylum and description is incorrect?

11) What is a distinctive feature of the chondrichthyans?

17) Which of the following are the only extant animals that descended directly from dinosaurs?

35) The advantage of excreting nitrogenous wastes as urea rather than as ammonia is that ________.

28) Organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body’s cells are likely to have ________.

36) Birds secrete uric acid as their nitrogenous waste because uric acid ________.

35) The advantage of excreting nitrogenous wastes as urea rather than as ammonia is that ________.

21.  Complete oxidative breakdown of glucose results in ______ ATP molecules.

50. In mitochondria, an electron transport chain pumps protons from the matrix into the intermembrane space, whereas in chloroplasts, an electron transport chain pumps protons from the ________.