Answer:
A neuromuscular junction is a junction between a <em>nerve fiber</em> and a <em>muscle cell.</em>
Explanation:
<em>A neuromuscular junction (or myoneural junction) is a site of chemical communication between a nerve fiber and a muscle cell, is analogous to the synapse between two neurons. </em>
A motor neuron is able to transmit a signal to the muscle fiber, causing muscle contraction upon stimulation by a nerve impulse, the terminal releases the chemical neurotransmitter acetylcholine from synaptic vesicles binding to the receptors, the channels open, and sodium ions flow into the endplate, this initiates the end-plate potential, the electrical event that leads to contraction of the muscle fiber.
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1.Meiosis occurs in two stages.
2.Two cells result from mitosis, while four cells result from meiosis
3.Mitosis occurs in somatic cells, while meiosis occurs in sex cells
4.The cells that result from mitosis are diploid, while the cells that result from meiosis are diploid
5.The role of mitosis is wound healing and growth of the organism, while the role of meiosis is sexual reproduction and genetic variability.
The combination of high winds and flood waters
Answer: A virus lack the metabolic machinery common to other microorganisms
Explanation:
A virus is an ultramicroscopic particle capable of causing disease. It differs from other disease-causing organisms like bacteria, nematodes etc, because it has no metabolic system of its own but relies on its host system for survival and replication.
Hence, it is difficult for antibiotics to target and destroy viruses without harming patients, rather antiviral drug are prescribed against viruses