PATHOLOGY MCQ
CELL DAMAGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a new cell type is needed
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When the cell is bored
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Never
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When the brain signals the cell to change
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Detailed explanation-1: -One of the oldest methods for stem cell differentiation is the generation of embryoid bodies (EBs). Generally, when stem cells are cultured without an adherent surface, feeder cells, or a complex matrix, the cells aggregate. These aggregated cells spontaneously differentiate.
Detailed explanation-2: -The organism in a stage between zygote to fetus is called an embryo* and the cells are called embryonic stem cells. At this point embryonic stem cells have the ability to become a cell for any part of the body (nerve, muscle, blood, etc.). This ability to become any type of cell in the body is called pluripotent.
Detailed explanation-3: -Embryonic stem (ES) cells are fully pluripotent in that they can differentiate into all cell types, including gametes.
Detailed explanation-4: -In early pregnancy, the blastocyst stage continues for about 5 days before the embryo implants in the uterus, or womb. At this stage, stem cells begin to differentiate.