10.4 Cell Differentiation Answer Key
Question: Humans, pets, and petunias all pass through an early stage of development called a(n) ___________.
Answer: embryo
Question: Cells become _____ through the process of differentiation
Answer: specialized
Question: Scientists have mapped the outcome of every ___ that leads to differentiation in the development of the microscopic worm C. elegans.
Answer: cell division
Question: Most cells in the adult body are no longer capable of___.
Answer: Differentiation
Question: Which is an example of a totipotent cell?
Answer: fertilized egg
Question: Cells that are pluripotent are unable to develop into the tissue that
Answer: surrounds an embryo
Question: Adult stem cells are best described as
Answer: multipotent
Question: Complete the concept map by identifying some of the types of cells that embryonic cells give rise to. Then explain how stem cells are like the stem of a plant.
Answer: Many different types of cells can come from stem cells, like the branches emerging from a stem.
Question: Which is not a new, potential benefit of stem cell research?
Answer: growing new skin cells to repair a cut
Question: What is the main reason that embryonic stem cell research is considered ethically controversial?
Answer: embryos are destroyed in the process