Cell Cycle & Mitosis 9.1

Which phase of the cell cycle is characterized by the cell growing and preparing for DNA replication?

• G1 phase

• S phase

• G2 phase

• M phase

During which stage of mitosis do the chromosomes line up in the middle of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

What is the main purpose of the G2 phase in the cell cycle?

• DNA replication

• Cell division

• Checking for DNA damage and repair

• Protein synthesis

Which of the following is NOT a stage of mitosis?

• Interphase

• Prophase

• Anaphase

• Telophase

Which process ensures that each daughter cell receives an exact copy of the DNA from the parent cell?

• Cytokinesis

• Mitosis

• Meiosis

• DNA transcription

What is the significance of the checkpoint at the end of G2 phase?

• It ensures that all the DNA has been replicated.

• It checks for nutrient availability.

• It signals the cell to enter mitosis.

• It repairs all the damaged DNA.

Uncontrolled cell division can lead to the formation of:

• Muscle tissue

• Nerve tissue

• Cancer

• Blood cells

During which phase of mitosis do the sister chromatids separate and move to opposite poles of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

What is the role of tumor suppressor genes in the regulation of the cell cycle?

• They promote cell division.

• They repair damaged DNA.

• They prevent uncontrolled cell division.

• They initiate DNA replication.

Which of the following best describes the function of the spindle fibers during mitosis?

• They replicate the cell's DNA.

• They break down the nuclear membrane.

• They assist in the separation of sister chromatids.

• They synthesize RNA.