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Q. What is the mechanism by which the neural impulse is transmitted along the axon?
The neural impulse is transmitted along the neuronal membrane through depolarization of consecutive neighboring regions when a region in the internal surface of the membrane is depolarized it becomes more positive in relation to the neighboring internal region so positive electrical charges (ions) move towards this more negative region and voltage-gated sodium channels are activated and open. The action potential then linearly propagates along the membrane waiting near the presynaptic region of the axon.
Which type of cell came first in evolution - the eukaryotic cell or the prokaryotic cell? This is an interesting problem of biological evolution. The most accepted hypothesis a
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Describe the structure of the teeth? How is this tissue modified to carryout its function?
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how are the listed from largest group to smallest group
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Define Genetic engineering and Biotechnology Genetic engineering or recombinant DNA technology, involves the use of a variety of enzymes, such as restriction endonucleass and
briefly explain the following feeding mechanisms in holozoic animals a) filter feeding b) fluid feeding c)deposit feeding
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