Which of the following is not related to apoptosis?
Correct answer: D. None of the these
- A. Loss of tail of developing humans embryos
- B. Loss of tissues between developing digits
- C. Controlling the number of neurons
- D. None of the these
Explanation
All of the options listed are related to apoptosis, which is a programmed cell death process essential for the development, tissue remodeling, and maintenance of cellular homeostasis. Programmed cell death helps in the proper control of multicellular development, which may lead to the deletion of the entire structure (e.g., the tail of developing human embryos) or part of the structure (e.g., tissue between developing digits). Cell death even controls the number of neurons, because most of the neurons in the human body die during development.
This question appeared on the NUMS 2015 paper, which you can sit online with every answer explained.
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Regeneration is the replacement of lost or damaged cells, tissues or body parts, ranging from ordinary tissue repair to regrowth in organisms such as planarians. Ageing covers progressive cellular and physiological decline, including reduced repair, senescence, genetic and environmental influences, and the difference between normal ageing and disease.
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