Cell Cycle and Cancer Quiz

What is the main reason for a multicellular organism to grow in size?

• Cells getting bigger individually

• Cells growing in preparation for mitosis in G2 phase

• Cells making more cells by dividing

• Cells replicating their DNA in S phase

What is a major risk factor for some cells to become cancerous?

• Regular cell division

• Excessive exposure to UV light

• Secure anchoring of cells

• Healthy cell communication

What is the process by which cells self destruct if they are damaged beyond repair?

• Mitosis

• Synthesis

• Cytokinesis

• Apoptosis

Which phase of the cell cycle checks if the DNA was replicated correctly in S phase?

• G2 phase

• M phase

• S phase

• G1 phase

What is the main function of the protein p53 in the cell cycle?

• Positive regulation of cell cycle phases

• Initiating apoptosis

• Preparing for mitosis in G2 phase

• Replicating DNA in S phase

What is the resting phase of some cells where they are not preparing to divide?

• G1 phase

• G2 phase

• M phase

• G0 phase

Which type of cells may stay in G0 phase permanently and never get to M phase?

• Skin cells

• Muscle cells

• Neurons in the brain and spinal cord

• Stomach cells

What is the main role of Cdk in the cell cycle?

• Replicating DNA in S phase

• Preparing for mitosis in G2 phase

• Initiating apoptosis

• Positive regulation of cell cycle phases

What is the main function of the protein cyclin in the cell cycle?

• Positive regulation of cell cycle phases

• Initiating apoptosis

• Negative regulation of cell cycle phases

• Preparing for mitosis in G2 phase

What is the main function of the checkpoint in metaphase of the cell cycle?

• Checking if the cell has the resources it needs

• Checking if the cell is growing well enough

• Checking if the DNA was replicated correctly

• Checking if the chromosomes are lined up correctly