Cell Cycle Regulation

All cells grow and divide at the same rate.

• True

• False

What proteins serve as the regulators of the cell growth cycle?

• Ubiquitin

• Melatonin

• Cyclin

• Growthin

What are cells called that grow and divide without regulation or control?

• Stem cells

• Cancer

• Kinases

• Zygotes

There is an ethical controversy surrounding research using what type of stem cells?

• Embryonic stem cells

• Adult stem cells

• Bone marrow stem cells

• Artificial stem cells

What is a substance called that is known to increase the chances of giving someone cancer?

• Toxic

• Biohazardous

• Tumor

• Carcinogen

What is the "self-destruct sequence" a cell can use to kill itself if it is damaged beyond repair? (This is also a defense against cancer)

• Phagocytosis

• Apoptosis

• Exocytosis

• Cytokenesis

Which of the following is a reason that embryonic stem cells are different than adult stem cells?

• Embryonic stem cells can specialize into any cell, while adult stem cells can't.

• Adult stem cells can specialize into any cell, while embryonic stem cells can't.

• Adult stem cells divide at a faster rate than embryonic stem cells.

• Embryonic stem cells are illegal and can't be used for research or treatment.

What is the stage of the cell life cycle where DNA replication occurs?

• S phase

• G1 phase

• G2 phase

• M phase