Lactase an carbonic anhydride are examples of what type of substance

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?