Cell Cycle Regulation Quiz

What are the genes that stimulate the cell to proliferate called?

• Growth factor genes

• Proto-oncogenes

• Transcription factor genes

• Tumor suppressor genes

Which type of receptor responds to growth factors and triggers the mitosis process?

• Tyrosine kinase receptor

• G protein-coupled receptor

• Adenylate cyclase receptor

• Calcium calmodulin receptor

What is the effector enzyme that is activated by GQ protein in the G protein-coupled receptor pathway?

• Protein kinase A

• Phospholipase C

• Adenylate cyclase

• MAP kinase

What is the product produced by the genes that respond to the transcription factors activated by growth factors?

• Growth factors

• Transcription factors

• Specific enzymes

• Specific proteins

Which of the following is not a checkpoint in the cell cycle?

• G2/M checkpoint

• G0 checkpoint

• M checkpoint

• G1/S checkpoint

What is the stage where some cells may go if they are not actively replicating?

• G0 stage

• G1 phase

• S phase

• G2 phase

What is the process where DNA is replicated during the cell cycle?

• Interphase

• Mitosis

• Cytokinesis

• S phase

Explain how the cyclin-CDK complex stimulates cell proliferation. Include in your answer how the cyclin-CDK complex prevents tumor suppression genes from activating.

Explain how a tumor suppressor gene, like p53, stops cell proliferation.