Which of the following is NOT a characteristic of animals ? A. The ability to make food
B. The ability to move
C. Eukaryotic cells
D. Cells that lack cell walls

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

What would be the most likely result if the ph of the stomach were increased to 5

What is the problem in this article? what solution does the article propose?