What role do totipotent cells play in the development of an animal?A.They can become any type of cell in the body or in the placenta or umbilical cord.B.They produce the three germ layers of an embryo.C.They work together to perform distinct functions in the animal.D.They produce proteins for an organism's growth and survival.SUBMITarrow_backPREVIOUS
Question
What role do totipotent cells play in the development of an animal?A.They can become any type of cell in the body or in the placenta or umbilical cord.B.They produce the three germ layers of an embryo.C.They work together to perform distinct functions in the animal.D.They produce proteins for an organism's growth and survival.SUBMITarrow_backPREVIOUS
Solution
Totipotent cells play a crucial role in the development of an animal. They are the most versatile cell type because they have the ability to become any type of cell in the body, as well as in the placenta or umbilical cord. This is stated in option A.
In the earliest stages of embryonic development, an organism is made up entirely of totipotent cells. As the organism continues to develop, these cells differentiate into more specialized types of cells, eventually forming all the different tissues and organs of the body.
So, while option B is also correct in that totipotent cells do eventually produce the three germ layers of an embryo (ectoderm, mesoderm, and endoderm), it is their ability to become any type of cell that is most characteristic of totipotent cells.
Option C is a general statement about how cells work together in an organism, and while it's true, it doesn't specifically address the role of totipotent cells.
Option D is more characteristic of specialized cells, like muscle cells or nerve cells, which produce specific proteins necessary for an organism's growth and survival.
In conclusion, the most accurate answer to the question "What role do totipotent cells play in the development of an animal?" would be option A: They can become any type of cell in the body or in the placenta or umbilical cord.
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Which statement describes the role of specialized cells in an organism?A.Specialized cells activate during periods of extreme stress.B.Specialized cells perform specific functions in tissues.C.Specialized cells divide to form unspecialized cells.D.Specialized cells are short-lived and used for initial growth.SUBMITarrow_backPREVIOUS
Cells in an embryo’s _______________ will later form muscle, bones, and the circulatory system.
What can be inferred about the process of foetus formation?a. The development of embryo into foetus requires the attachment of embryo to the wall of theuterus.b. The development of embryo into foetus starts with the zygote anchoring itself to the walls ofthe oviduct.c. The development of embryo into foetus does not involve fusion of gametes.d. The development of embryo into foetus begins with the process of ovulation where a zygoteis released from the ovary.
The function of the umbilical cord is to Blank______.Multiple choice question.connect the embryo to the placentainsulate the embryo against heat and coldproduce progesterone and estrogenproduce fetal blood cells
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