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.
Best Answer: mRNA is a molecule of RNA encoding a chemical blueprint for a protein product. mRNA is transcribed from a DNA template, and carries coding information to the sites of protein synthesis: the ribosomes. mRNA is a single stranded molecule transcribed from the template strand of DNA by RNA polymerase. It's role is to carry information, in the form of codons, from the nucleus into the cytoplasm, where translation of that message occurs. tRNA contains an anti-codon on one of its arms that can bind to a codon on the mRNA.