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
noun (plural mitochondria ËmÊÉªtÉ(Ê)ËkÉndrÉªÉ). An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner part being folded inwards to form layers (cristae).Example sentences. 1  Chloroplasts are cell organelles comparable to the mitochondria of animal cells. Chloroplasts are cell organelles comparable to the mitochondria of animal cells. 2  Inside the cytoplasm are mitochondria and endoplasmic reticulum. 3  The singlet oxygen damages cell membranes, mitochondria and cell nuclei.