Cell cycle checkpoints

Front

What is the G1 Checkpoint?

Back

The G1 Checkpoint is a cell cycle checkpoint that ensures environmental conditions are ideal for cell survival before the cell enters the S phase.

Front

What is the G2 Checkpoint?

Back

The G2 Checkpoint is a cell cycle checkpoint that verifies if DNA has been replicated correctly and checks for DNA damage before the cell enters mitosis.

Front

What is the M Checkpoint?

Back

The M Checkpoint, also known as the spindle checkpoint, ensures that all chromosomes are properly attached to the spindle apparatus before the cell proceeds with mitosis.

Front

What are spindle fibers?

Back

Spindle fibers are structures made of microtubules that help separate chromosomes during mitosis.

Front

What are proto-oncogenes?

Back

Proto-oncogenes are normal genes that can become oncogenes when mutated, leading to uncontrolled cell growth.

Front

What are oncogenes?

Back

Oncogenes are mutated forms of proto-oncogenes that promote cancerous growth and division of cells.

Front

What is angiogenesis?

Back

Angiogenesis is the process of forming new blood vessels, often in response to a malignant tumor, allowing it to grow and spread.

Front

What is the role of tumor suppressor genes?

Back

Tumor suppressor genes are responsible for regulating cell division and preventing uncontrolled cell growth; mutations can lead to cancer.

Front

What is the significance of the cell cycle?

Back

The cell cycle is crucial for growth, development, and tissue repair, ensuring that cells divide accurately and at the right time.

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, DNA is replicated, resulting in two identical sets of chromosomes for the daughter cells.