The best diagnosis is aphthous ulcers. The description above is fits what aphthous ulcers are. They might occur several times a year, and always last about 7 days total. These are painful ulcers which may appear in a person's mouth a couple of times a year and are a minor nuisance.
<span>Based on the age and demographic, the best diagnosis given the facts is genital herpes. The recurrence of the ulcers in the labial region are indicative of a chronic viral infection. The odds of genital herpes from a single unprotected exposure are quite realistic at approximately 1 in 1000 which support assertion that herpes is the best diagnosis.</span>
It shows the evolution of an being. "Fossil record, history of life as documented by fossils, the remains or imprints of the organisms from earlier geological periods preserved in sedimentary rock." from https://www.britannica.com/science/fossil-record
When a cell has too much of one thing, homeostasis gets rid of some of it and balances the cell out. Just like when you have too much stress, you find ways (coping mechanisms) to get rid of some of it.
Early protists were first eukaryotic organisms and had several membrane bound organelles. The anaerobic protists evolved by acquiring purple bacteria. The purple bacteria have the ability to carry out aerobic cellular respiration. The endosymbiont transformed into mitochondria in due course of evolution. Similarly, the photosynthesizing protists were evolved by endosymbiosis of cyanobacteria which in turn was transformed into chloroplast during further evolution.
