Answer:
Option C, open chemically gated sodium ion channels.
Explanation:
The nicotinic receptors are present on the muscle cell membrane. These receptors belong to the class of cholinergic receptor which binds to the acetylcholine and opens the gated channel to allow transfusion of cation through it. These actions of the receptors are stimulated by the neurotransmitter. Nicotinic receptors are very fast at acting and hence are more prevalent at the neuromuscular junction.
Hence, option C is correct
Prokaryotic cells do not have a nucleus, animals cells have a nucleus and plant cells have a nucleus. Animal cells and plant cells are both eukaryotic.
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The patient's symptoms indicate that he probably suffers from acute lung rejection. Acute rejection consists an immune reaction to the tissue introduced into the body and it could happen after a week of the transplant procedure. The patient should be administered corticosteroids, as they have been shown to have anti-inflammatory effects and they could reduce the fever. In addition, the patient should be administered prednisone, which is a synthetic corticosteroid drug very commonly used as a suppressor of the immune system.