Symptoms. A buzzing or ringing type of sound is heard in the ear which is accompanied by a syndrome known as Meniere's disease. Meniere's disease is an inner ear disorder that causes severe hearing loss, ringing in the ears, and dizziness. Diagnosis.
Symbiogenesis, or endosymbiotic theory, is an evolutionary theory that explains the origin of eukaryotic cells from prokaryotes.It states that several key organelles of eukaryotes originated as a symbiosis between separate single-celled organisms.ccording to this theory, mitochondria, plastids (for example chloroplasts), and possibly other organelles representing formerly free-living bacteria (prokaryotes) were taken inside another cell as an endosymbiont around 1.5 billion years ago.
Endosymbiotic Theory in Plain English - Duration: 6:14. David Herbst 100,172 views