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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Answer:
Ginagawa ang marcotting upang maparami ang halaman. Ginagamit dito ay ang sanga ng isang halaman. Binabalatan ito at ibinabalot sa lupa o balat ng niyog saka babalutan ng plastic na supot hanggang sa tumubo ang mga ugat nito, pagkatapos tumubo ang mga ugat nito ay saka puputulin ang sanga at ito ang itatanim sa lupa upang magkaroon ng panibagong halaman. Madalas ginagamit ito sa mga puno na matagal tumubo.
Explanation:
False in a sense because it is not random. It is just that some organisms have more advantageous characteristics than others. These genes are then passed on which makes the likelihood of the next generation surviving greater.
<span>3)Add iodine (1 min)
4)acid/alcohol wash (1 min)
5)Flood with safranine (1min)
6)Air dry and examine.
These times are for clinical microbiology and experimental methods employ optimal and more precise times (but overall its pretty close).
Down side of this method is that you must smear bacteria onto the slide and fix it by heating the underside of the slide with a bunsen burner. if they are pink then you have gram negative (Gram's stain didnt stick) if its purple then its gram positive(Gram's stain did stick) This is due to the peptidoglycan layers. Gram negative bacteria have only a thin layer of peptidoglycan as part of the cell membrane/wall where Gram positive have a very think peptidoglycan layer.</span>Source(s):<span>Medical Microbiology</span>
Answer:
Natural Selection
Explanation:
The process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.