What is the purpose of the cell cycle?

• To copy all the genetic material

• To divide the cell into two daughter cells

• To replace old cells in our bodies

• All of the above

Tags

NGSS.HS-LS1-4

What is the structure that holds the two identical sister chromatids together?

• Centromere

• Chromosomal arms

• Histones

• Nucleosomes

Which phase of the cell cycle involves cell growth?

• G1 phase

• S phase

• G2 phase

• M phase

What is the purpose of the G1 checkpoint?

• To ensure DNA replication occurs without problems

• To allow the cell to continue to the rest of the cycle

• To govern the separation of sister chromatids

• To inhibit cell division in the presence of growth factors

What are the two categories of proteins that regulate the cell cycle?

• Protein kinases and cyclins

• Histones and nucleosomes

• Receptors and signal transduction

• Messengers and plasma membrane

What happens when the regulation of the cell cycle goes wrong?

• Cells divide out of control

• Development of a tumor

• Cancer

• All of the above

What is the term for the nondividing state of a cell?

• G Zero phase

• M phase

• S phase

• G2 phase

What is the purpose of density-dependent inhibition?

• To stop cell division when there is no room

• To stimulate cell growth during injury

• To ensure DNA replication occurs without problems

• To separate sister chromatids during mitosis

Tags

NGSS.HS-LS1-4

What is the term for cells that are dividing out of control?

• Cancer cells

• Regular cells

• Tumor cells

• Abnormal cells

What is the primary point where the cell determines whether it will divide or not?

• G1 checkpoint

• S phase

• G2 checkpoint

• M phase