1. The cell in this demonstration began mitosis with two chromosomes. How many chromosomes did it have at the end of mitosis? 2. Why must a cell make a copy of tis chromosomes before cell division?

3. What structure holds sister chromatids together?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.