Question: Which of the following statements about gap junctions is (are) false? Gap junctions arc made of …
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Show transcribed image text Which of the following statements about gap junctions is (are) false? Gap junctions arc made of connexons. Molecules up to 10,000 daltons in molecular weight can move across gap junctions. Because gap junctions do not allow ions to pass through, they are not used for electrically coupling cells. jap junctions can close in response to extracellular signals. Which type(s) of junction contribute(s) the most to the polarization of epithelial cells? Adherens junctions desmosomes tight junctions gap junctions Place the following in order of their replacement times, from longest to shortest. Epidermal cell nerve cell bone matrix red blood cell cell lining the gut Cells that are terminally differentiated will undergo apoptosis within a few days can. most likely, no longer undergo cell division are unable to move no longer produce RNAs An adult hemopoietic stem cell found in the bone marrow will occasionally produce epidermal cells when necessary can produce only red blood cells can undergo self-renewing divisions for the lifetime of a healthy animal will express all the same transcription factors as those found in an unfertilized egg How do re productive cloning and therapeutic cloning differ. The DNA in the nucleus of cells producted for therapeutic cloning is genetically identical to the donor genome, whereas in cells producted for reproductive cloning it is not. Reproductive cloning requires a supply of fertilized donor egg cells, whereas therapeutic cloning requires unfertilized egg cells. Therapeutic cloning requires nuclear transplantation, whereas reproductive cloning does not. Embryos are placed into foster mothers during reproductive cloning but not during therapeutic cloning. Induced pluripotent stem (iPS) cells are created by the expression of a set of key genes in cells derived from adult so that these cells can differentiate into a variety of cells types require a supply of donor egg cells, such as embryonic stem cells can differentiate into a greater variety of adult tissues than embryonic stem cells are created by nuclear transplantation
Which of the following statements about gap junctions is (are) false? Gap junctions arc made of connexons. Molecules up to 10,000 daltons in molecular weight can move across gap junctions. Because gap junctions do not allow ions to pass through, they are not used for electrically coupling cells. jap junctions can close in response to extracellular signals. Which type(s) of junction contribute(s) the most to the polarization of epithelial cells? Adherens junctions desmosomes tight junctions gap junctions Place the following in order of their replacement times, from longest to shortest. Epidermal cell nerve cell bone matrix red blood cell cell lining the gut Cells that are terminally differentiated will undergo apoptosis within a few days can. most likely, no longer undergo cell division are unable to move no longer produce RNAs An adult hemopoietic stem cell found in the bone marrow will occasionally produce epidermal cells when necessary can produce only red blood cells can undergo self-renewing divisions for the lifetime of a healthy animal will express all the same transcription factors as those found in an unfertilized egg How do re productive cloning and therapeutic cloning differ. The DNA in the nucleus of cells producted for therapeutic cloning is genetically identical to the donor genome, whereas in cells producted for reproductive cloning it is not. Reproductive cloning requires a supply of fertilized donor egg cells, whereas therapeutic cloning requires unfertilized egg cells. Therapeutic cloning requires nuclear transplantation, whereas reproductive cloning does not. Embryos are placed into foster mothers during reproductive cloning but not during therapeutic cloning. Induced pluripotent stem (iPS) cells are created by the expression of a set of key genes in cells derived from adult so that these cells can differentiate into a variety of cells types require a supply of donor egg cells, such as embryonic stem cells can differentiate into a greater variety of adult tissues than embryonic stem cells are created by nuclear transplantation
