wunder beta

📘 How does a cell make protein?

Picture a ribosome reading a message while amino acids form a chain. The message is not DNA: you are watching a temporary RNA copy turn stored information into a molecule.

5
lessons
~25 min
to learn
Adults
level
Start the course →

What you’ll learn

  1. A gene becomes a messageExplain how transcription and RNA processing create a portable mRNA message.RNA polymerase copies a selected DNA region, and processing prepares the transcript for translation.
  2. The ribosome is the workbenchDescribe how ribosome subunits and tRNA coordinate translation.The ribosome positions mRNA and tRNAs so codons can be decoded into a growing chain.
  3. The code is a lookup tableUse codons, reading frames, and stop signals to interpret mRNA.Three-base codons map RNA sequence to amino acids or termination instructions.
  4. A chain becomes a proteinConnect peptide-bond formation, folding, polysomes, and termination.Translation builds a polypeptide that must be released, folded, and sometimes modified.
  5. A cell controls protein outputIdentify checkpoints that regulate gene expression and explain the complete pathway.Cells tune protein output through transcription, RNA handling, translation, and protein processing.

Questions this course answers

What is the main product of transcription?

Transcription uses DNA as a template to make RNA; translation later uses mRNA to make a polypeptide.

Put these gene-expression events in order.

The message must be made and prepared before a ribosome can translate it.

Match each component to its main job.

The pathway works because different molecular machines handle copying, decoding, delivery, and release.

Why does translation need tRNA?

tRNA pairs an anticodon with an mRNA codon while carrying the corresponding amino acid.

Put a translation cycle in order.

The ribosome repeatedly decodes, joins, and advances along the message.

How many RNA bases are in one codon?

The genetic code reads mRNA in three-base units called codons.

Grounded in trusted sources

  • National Human Genome Research Institute, Transcription, https://www.genome.gov/genetics-glossary/Transcription
  • National Human Genome Research Institute, Ribosome, https://www.genome.gov/genetics-glossary/Ribosome
  • OpenStax, Biology 2e, 15.1 The Genetic Code, https://openstax.org/books/biology-2e/pages/15-1-the-genetic-code
  • OpenStax, Concepts of Biology, 9.3 Transcription, https://openstax.org/books/concepts-biology/pages/9-3-transcription
  • NCBI Bookshelf, The Cell: Translation of mRNA, https://www.ncbi.nlm.nih.gov/books/NBK9849/

Every Wunder lesson is built from real, reputable sources — never invented.

Related courses

📘How does an electric eel generate a shock?📘How does soil form from rock?📘How does fog form?📘How does a compass find north?📘How does an egg develop into a chick?📘How does a beaver dam change a landscape?📘How does a camel survive without water?📘How does an antibiotic kill bacteria?

Wunder is a personalized learn-anything platform — tell it any topic and it builds a beautiful, fact-checked course in minutes, with narration, a knowledge check, and a college-style University track.

All topics · Home

© 2026 Wunder Learning LLC · Terms & Privacy