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.
â¢ mRNA molecules are synthesized from the DNA templates by transcription. â¢ mRNA consists of only one nucleotide chain (single stranded) while DNA consists two chains (Double stranded). â¢ In DNA, the sugar is deoxyribose whereas, in mRNA, the sugar is ribose.â¢ mRNA consists the base uracil instead of thymine in DNA.n both DNA and mRNA, genetic information is encoded in the sequence of nucleotides, which are arranged into codons. Each codon consists of three bases and encodes for a specific amino acid with the exception of stop codon, which terminates protein synthesis process. DNA.