Buy Book. The history of Thailand can be broken into three very general periods - pre-Khmer, Khmer, and post-Khmer. The period called Pre-Khmer, is also called the Dvaravati period. It lasted from about the 6th century until about the 11th or 12th century, when it was overwhelmed by the Khmer civilization of Angkor.
An organelle is a unique part of a cell that has a specific function. The term is a combination of the word organum, which means instrument or engine, and the suffix -elle, which means... Star Gazing
Definition of Rough Endoplasmic Reticulum. Cellular organelles are like tiny organs found in a cell that perform specific functions like the large organs in our bodies. The endoplasmic reticulum is a membrane system of folded sacs and interconnected channels that serves as a site for protein and lipid synthesis.efinition of Rough Endoplasmic Reticulum. Cellular organelles are like tiny organs found in a cell that perform specific functions like the large organs in our bodies. The endoplasmic reticulum is a membrane system of folded sacs and interconnected channels that serves as a site for protein and lipid synthesis.