As a cell grows it ____.

• places more demands on its DNA

• uses up food and oxygen more quickly

• has more trouble moving enough materials across its cell membrane

• all of these

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

• metaphase

• cell division

• mitosis

• interphase

When during the cell cycle are chromosomes visible?

• only during the G1 phase

• only during interphase

• only during cell division

• only when they are being replicated

Which event occurs during interphase?

• spindle fibers begin to form

• the cell grows

• centromeres divide

• centrioles appear

When is the cell's DNA copied and duplicated?

• S phase

• metaphase

• prophase

• G1 phase

Which of the phases of interphase is typically the shortest?

• S phase

• G1 phase

• G2 phase

• telophase

What is the structure pictured here called?

• spindle fibers

• centromeres

• centrioles

• sister chromatids

What is the structure that holds the object in the picture together called?

• centromere

• centriole

• spindle fiber

• chromatid

When do sister chromatids first form?

• telophase

• interphase

• prophase

• metaphase

The first phase of mitosis is called ___.

• prophase

• anaphase

• metaphase

• interphase