📚 Biology
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Messenger RNA (mRNA) is a single-stranded molecule that carries genetic instructions from DNA to ribosomes, where proteins are built.
Without mRNA, your cells would know the recipes but never cook the meals.
Biology often summarizes information flow as:
1. DNA stores information
2. mRNA carries it
3. Protein does the work
> DNA → RNA → Protein
mRNA is the middle step. It makes sure the right protein is built at the right time and place in the cell.
Proteins build and run your body:
mRNA controls which proteins are made and how much. By changing mRNA levels, cells respond to:
So understanding mRNA helps explain growth, disease, and even how some vaccines work.
Cells use several RNA types:
mRNA is unique because its sequence directly matches the order of amino acids in a protein. It is usually short-lived and constantly replaced, keeping cell instructions flexible.
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