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Which of the following best defines stem cells?(1 point)

Responses

Stem cells are undifferentiated cells that can differentiate into specialized cell types
Stem cells are undifferentiated cells that can differentiate into specialized cell types

Stem cells are cells that can divide to produce two identical daughter cells
Stem cells are cells that can divide to produce two identical daughter cells

Stem cells are cells that are found only in the bone marrow
Stem cells are cells that are found only in the bone marrow

Stem cells are cells that have already differentiated into specific cell types
Stem cells are cells that have already differentiated into specific cell types
Question 13
What type of cells DO NOT perform mitosis?(1 point)
Responses

Brain and muscle cells
Brain and muscle cells

Sperm and egg cells
Sperm and egg cells

Blood and organ cells
Blood and organ cells

Skin and hair cells

1 answer

Question 12: The option that best defines stem cells is:

  • Stem cells are undifferentiated cells that can differentiate into specialized cell types.

Question 13: The type of cells that do NOT perform mitosis is:

  • Brain and muscle cells.

Brain (neuronal) cells typically do not undergo mitosis once they have differentiated, and while some muscle cells can regenerate, many muscle cells (like cardiac muscle cells) also do not perform mitosis. Sperm and egg cells undergo meiosis rather than mitosis.