ET checkpopints & cancer 2/1/24

Normally control the start of mitosis

• Proto-Oncogenes

• Oncogenes

• Tumor Suppressor Genes

Genes whose protein prevent cell division or lead to cell death.

• Proto-Oncogenes

• Oncogenes

• Tumor Suppressor Genes

Select all of the cell cycle checkpoints

• Cell growth checkpoint

• DNA synthesis checkpoint

• Cancer checkpoint

• Mitosis checkpoints

What is the purpose of the cell cycle checkpoints?

• To make sure the cell isn't duplicating too fast

• They were there by chance and happen to help reduce the chances of cancer

• To make sure that all parts of the cell are healthy to avoid mutations

A characteristic of cancer cells is that they

• May have mutations in genes that regulate the cell cycle

• Grow and divide out of control

• Often has disruptions in the cell cycle

• All are true

When it occurs at the proper time, programmed cell death (apoptosis)

• will disrupt homeostasis
• may cause defective genetic info to be passed to the next generation of cells
• is an important regulatory process that maintains the health of a multicellular organism
• can contribute to the development of cancer