Cell Cycle Regulation, Cell Differentiation, Cancer and Apoptosis

Open Ended

Why is the regulation of the cell cycle important for cellular function and organismal health?

Multiple Choice

Which of the following is a function of checkpoints in the cell cycle?

• To monitor the cycle and stop it if something goes wrong

• To speed up cell division regardless of errors

• To prevent DNA replication

• To eliminate all spindle fibers

Multiple Choice

Which of the following best describes cancer cells?

• They grow and divide uncontrollably, crowding out normal cells.

• They function normally and support tissue health.

• They only divide when needed by the body.

• They help repair damaged tissues without harming normal cells.

Open Ended

Explain how mutations and environmental factors contribute to the development of cancer cells.

Multiple Select

Which of the following statements about oncogenes and tumor suppressor genes are correct?

• Oncogenes promote cell growth and division when mutated.

• Tumor suppressor genes prevent cancer development.

• Mutations in tumor suppressor genes can lead to uncontrolled cell growth.

• Oncogenes act as brakes on cell division.

Open Ended

Describe the role of stem cells in the development of specialized cells in the body.

Open Ended

How do built-in checkpoints contribute to the regulation of the cell cycle, and why are spindle checkpoints particularly important during mitosis?

Multiple Choice

What is the role of cyclin/CDK combinations in the normal cell cycle?

• They signal activities such as DNA replication, protein synthesis, and nuclear division.

• They break down cellular waste.

• They transport nutrients across the cell membrane.

• They produce energy for the cell.

Multiple Choice

Why are adult stem cells considered less controversial compared to other types of stem cells?

• Because they can be obtained with the consent of their donor

• Because they are found only in embryos

• Because they cannot be used to repair tissues

• Because they are not found in the human body