As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion.Mar 4, 2016
I believe the answer would be <span>Gel electrophoresis.</span>
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Prokaryotic and Eukaryotic
<u>Answer</u>: Cavalier-Smith's model no longer separates prokaryotes and eukaryotes.
As I am familiar with this question I have provided you an asnwer. Please let me know if the answer above is part of your question's statements. You forgot to add the statements or the graph.
Here is also the <u>explanation</u>:
Although the Cavalier-Smith's model has introduced several new changes to the kingdom model, it still separates the prokaryotes and eukaryotes into two separate empires (Prokaryota and Eukaryota).
