國立臺灣大學農藝學系Wang, Yue-WenYue-WenWang2006-09-282018-07-112006-09-282018-07-112000http://ntur.lib.ntu.edu.tw//handle/246246/20060928155400671. Francis Crick (1956) named the flow of information from DNA  RNAprotein the Central Dogma. 2. Synthesis of an RNA molecule using a DNA template is called transcription. Only one of the DNA strands is transcribed. The enzyme used is RNA polymerase. 3. There are four major types of RNA molecules: a. Messenger RNA (mRNA) encodes the amino acid sequence of a polypeptide. b. Transfer RNA (tRNA) brings amino acids to ribosomes during translation. c. Ribosomal RNA (rRNA) combines with proteins to form a ribosome, the catalyst for translation. d. Small nuclear RNA (snRNA) combines with proteins to form complexes used in eukaryotic RNA processing.application/ppt4228608 bytesapplication/vnd.ms-powerpointzh-TWlearning objecthttp://ntur.lib.ntu.edu.tw/bitstream/246246/2006092815540067/1/0ch5.ppt