Answer:D. A change to one amino acid in a protein may cause a significant change in phenotype.
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The dose in milligrams for this patient who is receiving preoperative treatment would be 750 mg, since the dose is 6mg/Kg and he weights 275 pounds (124,73Kgs) multiplied by 6mg and the nurse will administer 15 ml for this dose.
The red blood cells would look just fine or normal in the person who has drowned. Water wouldn't be lost because it wouldn't be attracted to the concentration of the salt water and the salt water would be too large to break the barriers.