During development, some ectodermal stem cells differentiate into skin cells muscle cells while others differentiate into neurons. What causes these two differentiated cells to be different?
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During development, some ectodermal stem cells differentiate into skin cells muscle cells while others differentiate into neurons. What causes these two differentiated cells to be different? |
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- In Figure 13-2, the transplantation of certain regions of embryonic tissue induces the development of structures in new places. What are these special regions called, and what are the substances they are proposed to produce?Somatic stem cells are found in... all choices are correct embryonic tissues adult tissues germ tissuewhat type of stem cells are found in the bone marrow and skin that go through mitosis frequently to replace old worn out cells?
- Explain the difference between asymmetric and symmetric cell division. When the pool of stem cells for a particular tissue needs to expand, which of these two cell division mechanisms is utilized?Cell differentiation always involves(A) transcription of the myoD gene.(B) the movement of cells.(C) the production of tissue-specific proteins.(D) the selective loss of certain genes from the genome.Muscle cells differ from nerve cells mainly because they express different genes contain different genes use different genetic codes have unique ribosomes have different chromosomes Meristematic tissue cells in plants are most similar to which kind of cells in animals? Somite cells Ectodermal cells Embryonic stem cells Mesodermal cells If a developing insect embryo was mechanically agitated in order to evenly redistribute cytoplasmic eterminants throughout the embryo, then the embryo would develop normally but at a faster rate of cell growth and differentiation resulting insect would be missing structures that typically develop in the absence of cytoplasmic eterminants embryo would develop normally due to cues from induction signaling cytoplasmic determinants would convert to induction molecules and diffuse out of the embryo most daughter cells would fail to properly divide
- Which of the following can be regarded as unipotent stem cells. Germ cells B Induced-pluripotent stem cells Adult stem cells D Embryonic stem cells Primordial germ cells that have not reach the gonadsIf every cell in your body is a copy of that original fertilized egg, how is it that some cells are so different than other cells? How does differentiation help explain these different cell typesResearchers investigated the step-by-step processes of cell differentiation in somites through experiments in which cells were transplanted from one location to another early after somite formation. What did these experiments show? The cells of a somite are determined as the somite matures in response to cell-to-cell signals. The cells of a somite are irreversibly determined as soon as the somite is formed, based on cell-to-cell signals. The cells of a somite are determined as the somite matures in response to internal cytoplasmic signals. The cells of a somite are irreversibly determined as soon as the somite is formed, based on internal cytoplasmic
- Human embryonic stem cell research uses stem cells cultured from the blastula. These cells are pluripotent, meaning that these stem cells can develop many different types of human cells. Identify the part of the blastula that they are using and explain your choice.What determines whether a cell is to become a trophoblast cell or a member of the inner cell mass?You have an embryo in the eight-cell stage that shows radial and indeterminate cleavage. What would happen if you separated the cells of this embryo and placed them each into tissue culture media? Each cell may continue development, but only into a nonviable embryo that lacks many parts. Each cell may develop into a full-sized, normal embryo. All eight cells would die immediately. Each cell may deyelop into a smaller-than-average, but otherwise normal, embryo.