Examlex
Sympatric speciation can occur without polyploidy.
Nodes of Ranvier
Gaps in the myelin sheath of nerve fibers, which facilitate the rapid conduction of nerve impulses along the neuron.
Myelin Sheath
The myelin sheath is a protective covering made of fatty substances that surrounds the axons of many neurons, facilitating the rapid transmission of neural impulses.
Synapses
The junctions between neurons through which they communicate with each other using chemical or electrical signals.
Sympathetic Nervous
Part of the autonomic nervous system that prepares the body for action and stress by accelerating the heart rate, widening the airways, and other responses.
Q12: If a red-flowered plant is crossed with
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Q26: Which of the following statements about reproduction
Q27: Microphylls are associated with stems possessing protosteles.
Q33: Which of the following statements concerning pollination
Q38: Which of the following statements concerning ferredoxin
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Q49: Which of the following structures is NOT