18 Questions
What is the primary characteristic of a stem cell?
Ability to divide and renew themselves for long periods
What type of stem cell can develop into a new individual?
Totipotent
What is the primary function of multipotent stem cells?
Forming a number of different tissues
Where are pluripotent stem cells typically found?
In the inner cell mass of a blastocyst
What type of stem cell is found in a five to six-day-old embryo?
Pluripotent
What is the primary function of stem cells in tissue repair?
Returning function to damaged tissue
What is the main function of the normal control mechanism in cells?
To regulate cell division and prevent uncontrolled growth
What happens when DNA does not copy itself correctly during cell division?
A gene mutation occurs
What is the effect of mutations on cancer cells?
They ignore signals that start and stop the cell cycle
What are carcinogens also known as?
Mutagens
What is the purpose of DNA checking before cell division?
To ensure correct DNA replication
What is a characteristic of benign tumors?
They can occur anywhere in the body
What is a characteristic of adult stem cells?
They have a more restricted ability to produce different cell types and to self-renew.
What is the process of adding certain genes to a cell to make it behave like an embryonic stem cell?
Genetic reprogramming
What is the advantage of using induced pluripotent stem cells (iPS cells) over embryonic stem cells?
No need for embryos.
What is a characteristic of malignant tumors?
They invade surrounding tissue and can spread to other parts of the body.
What is the term for the process of cancer cells breaking away from the original tumor and spreading to other parts of the body?
Metastasis
What is the difference between benign and malignant tumors?
Malignant tumors are cancerous, while benign tumors are not.
Learn about the characteristics and functions of stem cells, including their ability to differentiate and proliferate, and their role in repairing damaged tissue. Discover the differences between stem cells and cancer cells.
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