MEDICINE
INFECTIOUS DISEASES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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You’re wrong Norman! That’s why you shouldn’t have skipped biology in third period! You’ll be working at a gas station with that idiocy, that’s all I know!
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1 + 1 = 11
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Norman is incorrect because brain development does not impact an organism’s cellular composition. Prokaryotes are organisms whose cells do not have an enclosed nucleus. Bacteria is an example of this. Babies are not.
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Norman’s belief is correct because brain development does impact an organism’s cellular composition. Because infant brains are still heavily developing, their brain tissue contains free floating genetic material. When they reach fourteen months of age, their brains (although not fully formed as that occurs in a person’s 20s) will have formed a nucleus to encase that material.
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Norman is incorrect because a cell is characterized by the presence of a nucleus and other membrane-bound organelles.
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Detailed explanation-1: -Neuroplasticity is the brain’s ability to change and adapt due to experience. It is an umbrella term referring to the brain’s ability to change, reorganize, or grow neural networks. This can involve functional changes due to brain damage or structural changes due to learning.
Detailed explanation-2: -By birth, only the lower portions of the nervous system (the spinal cord and brain stem) are very well developed, whereas the higher regions (the limbic system and cerebral cortex) are still rather primitive.
Detailed explanation-3: -Each area of the brain has millions of brain cells, or neurons which are connected to each other by synapses. At birth your baby has 100 billion brain cells but few connections (synapses) between these cells.
Detailed explanation-4: -The nerve cells proliferate before birth. In fact, a fetus’ brain produces roughly twice as many neurons as it will eventually need-a safety margin that gives newborns the best possible chance of coming into the world with healthy brains. Most of the excess neurons are shed in utero.