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Cell Biology Chapter: Apoptosis & Cell Cycle

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Cell Biology Chapter: Apoptosis & Cell Cycle

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Questions and Answers

What triggers apoptosis in a cell?

When the cell detects an external growth factor

During the S phase of the cell cycle

When the cell lacks energy resources

In the presence of DNA damage or failed checkpoints (correct)

Which of the following accurately describes the role of stem cells?

Stem cells can differentiate into specialized cell types but remain unspecialized. (correct)

Stem cells are exclusively found in adult tissues like bone marrow.

Stem cells can only replicate themselves indefinitely without differentiating.

Stem cells have no role in the development of organs.

Which of the following statements best describes cancer?

Cancer arises from uncontrolled cell division often due to mutations. (correct)

Cancer only affects cells in contact with external factors.

Cancer cells are always derived from stem cells only.

Cancer results from enhanced cell cycle regulation and apoptosis.

How does metastasis contribute to cancer progression?

By allowing cancer cells to spread to new sites in the body Signup and view all the answers

What is the primary function of checkpoints in the cell cycle?

To monitor and rectify any errors in cell division before proceeding Signup and view all the answers

What primary role do cyclins play in the cell cycle?

They regulate the different stages of the cell cycle. Signup and view all the answers

Which statement best describes the process of cyclin discovery?

A sample of cytoplasm from a mitotic cell triggers mitosis in another cell. Signup and view all the answers

What is the purpose of quality checkpoints in the cell cycle?

To verify that all processes are functioning correctly before progression. Signup and view all the answers

How can a cell prevent itself from dividing?

By lowering the cyclin levels or reducing their production. Signup and view all the answers

What two main functions does cell division control serve in multicellular organisms?

Promoting body growth and maintaining correct shape. Signup and view all the answers