BIO222 Cell Biology: Stem Cells and Cancer Cells
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Questions and Answers

What is the primary characteristic of a stem cell?

  • Ability to repair damaged tissue
  • Ability to differentiate into a specific cell type
  • Ability to form a new individual
  • Ability to divide and renew themselves for long periods (correct)

    • What type of stem cell can develop into a new individual?

  • Differentiated
  • Totipotent (correct)
  • Pluripotent
  • Multipotent

    • What is the primary function of multipotent stem cells?

  • Differentiating into a specific cell type
  • Forming a number of different tissues (correct)
  • Forming a new individual
  • Dividing and renewing themselves

    • Where are pluripotent stem cells typically found?

    <p>In the inner cell mass of a blastocyst</p> Signup and view all the answers

    What type of stem cell is found in a five to six-day-old embryo?

    <p>Pluripotent</p> Signup and view all the answers

    What is the primary function of stem cells in tissue repair?

    <p>Returning function to damaged tissue</p> Signup and view all the answers

    What is the main function of the normal control mechanism in cells?

    <p>To regulate cell division and prevent uncontrolled growth</p> Signup and view all the answers

    What happens when DNA does not copy itself correctly during cell division?

    <p>A gene mutation occurs</p> Signup and view all the answers

    What is the effect of mutations on cancer cells?

    <p>They ignore signals that start and stop the cell cycle</p> Signup and view all the answers

    What are carcinogens also known as?

    <p>Mutagens</p> Signup and view all the answers

    What is the purpose of DNA checking before cell division?

    <p>To ensure correct DNA replication</p> Signup and view all the answers

    What is a characteristic of benign tumors?

    <p>They can occur anywhere in the body</p> Signup and view all the answers

    What is a characteristic of adult stem cells?

    <p>They have a more restricted ability to produce different cell types and to self-renew.</p> Signup and view all the answers

    What is the process of adding certain genes to a cell to make it behave like an embryonic stem cell?

    <p>Genetic reprogramming</p> Signup and view all the answers

    What is the advantage of using induced pluripotent stem cells (iPS cells) over embryonic stem cells?

    <p>No need for embryos.</p> Signup and view all the answers

    What is a characteristic of malignant tumors?

    <p>They invade surrounding tissue and can spread to other parts of the body.</p> Signup and view all the answers

    What is the term for the process of cancer cells breaking away from the original tumor and spreading to other parts of the body?

    <p>Metastasis</p> Signup and view all the answers

    What is the difference between benign and malignant tumors?

    <p>Malignant tumors are cancerous, while benign tumors are not.</p> Signup and view all the answers

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