Most of the endoplasmic reticulum is concentrated in the cell body region of a neuron.
Endoplasmic reticulum (ER) is a membrane-enclosed cell organelle which is present all over the cytoplasm of every eukaryotic cell.
Electron microscope studies reveal that endoplasmic reticulum is present throughout the cytoplasm in neurons including the cell body, dendrites as well as axon.
However, it also shows that ER is largely concentrated in the cell body of a neuron.
A neuron or nerve cell is made up of three important regions viz. cell body, dendrites as well as axon. The cell body consists of cytoplasm with distinctive cell organelles as well as definite granular bodies which are known as Nissl's granules.
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Homozygote refers to a species with similar pairs of alleles for a particular trait. If both of the two gametes, which combine at the time of fertilization carry the similar kind of the gene for a particular trait, the organism is said to be homozygous for that trait.
In the given case, the frequency of the allele C^W is 0.32.
C^WC^W = q^2 = (0.32)^2 = 0.1024
So, the frequency of white flowers are 0.1024.
I believe the answer is "The oldest Earth rocks are 3.9 billion years old."
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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