Substances can move into and out of cells through the cell membrane. The three main types of movement are diffusion, osmosis and active transport. 1  1. 2  2. 3  3. 4  4.
Definition. noun. Abbreviated form for messenger ribonucleic acid, the type of RNA that codes for the chemical blueprint for a protein (during protein synthesis). Supplement. In prokaryotes, mRNA is produced by splicing a large primary transcript from a DNA sequence.
mRNA. mRNA, or messenger RNA, is the link between a gene and a protein. The gene is transcribed by RNA polymerase, and the resulting mRNA travels to the cytoplasm, where it is translated by ribosomes into a protein with the help of tRNA.RNA, or transfer RNA, is the decoder of the mRNA message during protein translation. After transcription, tRNA is extensively modified to include nonstandard bases such as pseudouridine, inosine, and methylguanosine.