Cell Cycle & Mitosis

Which of the following happens when a cell divides?

• The cell’s volume increases.

• It becomes more difficult for the cell to get rid of wastes.

• Each daughter cell receives its own copy of the parent cell’s DNA.

• It becomes more difficult for the cell to get enough oxygen and nutrients.

The process by which a cell divides into two daughter cells is called

• cell cycle.

• metaphase.

• interphase.

• mitosis.

The region labeled A in Figure 9-1 is called the

• centromere.

• centriole.

• sister chromatid.

• spindle.

The structures labeled B in Figure 9-1 are called

• centromeres.

• centrioles.

• sister chromatids.

• spindles.

Compared to small cells, large cells have more trouble

• dividing.

• producing daughter cells.

• storing needed materials and waste products.

• moving needed materials in and waste products out.

A multicellular organism begins life as a single cell—a fertilized egg with a complete set of chromosomes. The picture in Figure 10–2 above shows how the cell divides to become two cells, then four cells, eight cells, and so on. Which of the following statements best describes what happens during this process?

• Chromosomes are duplicated before cell division so that each new daughter cell has a complete set.

• Chromosomes are divided evenly during cell division so that each new daughter cell has an equal share of the original set.

• Chromosomes are stored in the original cell to direct the division of all daughter cells, which do not have their own chromosomes.

• Chromosomes are randomly distributed during cell division so that some new cells have partial sets while others have complete sets.

Which event occurs during the interphase?

• The cell carries out normal cell functions.

• Centrioles move to oposite poles.

• Spindle fibers begin to form.

• Centromeres divide.

Which of the following is a correct statement about the events of the cell cycle?

• Little happens during the G1 and G2 phases.

• DNA replicates during cytokinesis.

• The M phase is usually the longest phase.

• Interphase consists of the G1, S, and, G2 phases.

During which phase of mitosis do the chromosomes line up along the equator of the dividing cell?

• prophase

• telophase

• metaphase

• anaphase

One difference between cytokinesis in plant cells and in animal cells is that plant cells have

• centrioles.

• centromeres.

• a cell plate.

• chromatin.