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Translation (school)
Translation: mRNA -> polypeptide at a ribosome. tRNA carries an amino acid; anticodon pairs with codon. A site, P site named. Start: Met-tRNA at AUG. Peptide bond. Stop: release. Polyribosome named: several ribosomes on one mRNA. Prok: transcription and translation can overlap in time. Euk: nuclear envelope separates them. Transcription copies a gene's DNA sequence into mRNA, which carries the mes
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Translation (school)
What is it?
Translation: mRNA -> polypeptide at a ribosome. tRNA carries an amino acid; anticodon pairs with codon. A site, P site named. Start: Met-tRNA at AUG. Peptide bond. Stop: release. Polyribosome named: several ribosomes on one mRNA. Prok: transcription and translation can overlap in time. Euk: nuclear envelope separates them. Transcription copies a gene's DNA sequence into mRNA, which carries the message to ribosomes. Eukaryotes process mRNA (splicing, cap, tail) before export from the nucleus. Translation converts the mRNA codon sequence into a specific amino acid sequence — the central dogma's final step. tRNA anticodons match mRNA codons at the ribosome A and P sites.
In simple words
- Translation: mRNA -> polypeptide at a ribosome.
- 1. tRNA: Clover cartoon.
- 2. RIBOSOME: rRNA plus protein.
- Exam reminder: Order the central dogma (school): DNA replication copies the archive. Transcription writes mRNA. Translation builds the protein.
Important terms
TRANSLATION (SCHOOL): Translation: mRNA -> polypeptide at a ribosome.
1. tRNA: Clover cartoon.
2. RIBOSOME: rRNA plus protein.
What you should learn
- Explain translation (school) in clear biological language.
- Distinguish 1. trna from 2. ribosome.
- Use the key terms to answer a short Federal Board exam question.
Examples
- Carries one amino acid
- Reusable
- No protein-synthesis machine how-to
tRNA
Clover cartoon. Aminoacyl-tRNA synthetase named as the charger (word only). Wobble named: third base loose. Anticodon is RNA, so A on mRNA pairs U on tRNA. Only the template strand is transcribed. mRNA processed in eukaryotes: 5' cap, 3' poly-A tail, introns spliced out. Exons form the coding sequence.
RIBOSOME
rRNA plus protein. 70S prok, 80S euk (school). Initiation, elongation, termination named. Signal peptide named if the book sends proteins to the ER. Prokaryotes: 70S. Eukaryotes: 80S. A site (aminoacyl), P site (peptidyl), E site (exit). Polyribosome: many ribosomes on one mRNA for efficient protein production.
Recommended for Class 11
Full school-level explanation
Translation: mRNA -> polypeptide at a ribosome. tRNA carries an amino acid; anticodon pairs with codon. A site, P site named. Start: Met-tRNA at AUG. Peptide bond. Stop: release. Polyribosome named: several ribosomes on one mRNA. Prok: transcription and translation can overlap in time. Euk: nuclear envelope separates them. Transcription copies a gene's DNA sequence into mRNA, which carries the message to ribosomes. Eukaryotes process mRNA (splicing, cap, tail) before export from the nucleus. Translation converts the mRNA codon sequence into a specific amino acid sequence — the central dogma's final step. tRNA anticodons match mRNA codons at the ribosome A and P sites.
tRNA, then the assembly line:
WHAT — TRANSLATION (SCHOOL)
Translation: mRNA -> polypeptide at a ribosome. tRNA carries an amino acid; anticodon pairs with codon. A site, P site named. Start: Met-tRNA at AUG. Peptide bond. Stop: release. Polyribosome named: several ribosomes on one mRNA. Prok: transcription and translation can overlap in time. Euk: nuclear envelope separates them. Transcription copies a gene's DNA sequence into mRNA, which carries the message to ribosomes. Eukaryotes process mRNA (splicing, cap, tail) before export from the nucleus. Translation converts the mRNA codon sequence into a specific amino acid sequence — the central dogma's final step. tRNA anticodons match mRNA codons at the ribosome A and P sites.
WHY — Why this topic matters
TRANSLATION (SCHOOL) is an independent FBISE learning unit because students must connect its structures and processes with their biological functions and examples.
HOW — How it works
tRNA: Clover cartoon. Aminoacyl-tRNA synthetase named as the charger (word only). Wobble named: third base loose. Anticodon is RNA, so A on mRNA pairs U on tRNA. Only the template strand is transcribed. mRNA processed in eukaryotes: 5' cap, 3' poly-A tail, introns spliced out. Exons form the coding sequence. Examples: Carries one amino acid; Reusable; No protein-synthesis machine how-to. RIBOSOME: rRNA plus protein. 70S prok, 80S euk (school). Initiation, elongation, termination named. Signal peptide named if the book sends proteins to the ER. Prokaryotes: 70S. Eukaryotes: 80S. A site (aminoacyl), P site (peptidyl), E site (exit). Polyribosome: many ribosomes on one mRNA for efficient protein production. Examples: Peptide bond; Stop release; Many ribosomes = faster. Order the central dogma (school): DNA replication copies the archive. Transcription writes mRNA. Translation builds the protein.
tRNA
Clover cartoon. Aminoacyl-tRNA synthetase named as the charger (word only). Wobble named: third base loose. Anticodon is RNA, so A on mRNA pairs U on tRNA. Only the template strand is transcribed. mRNA processed in eukaryotes: 5' cap, 3' poly-A tail, introns spliced out. Exons form the coding sequence.
Remember
- anticodon
Examples
- Carries one amino acid
- Reusable
- No protein-synthesis machine how-to
RIBOSOME
rRNA plus protein. 70S prok, 80S euk (school). Initiation, elongation, termination named. Signal peptide named if the book sends proteins to the ER. Prokaryotes: 70S. Eukaryotes: 80S. A site (aminoacyl), P site (peptidyl), E site (exit). Polyribosome: many ribosomes on one mRNA for efficient protein production.
Remember
- A and P sites
Examples
- Peptide bond
- Stop release
- Many ribosomes = faster
Remember
- codon-anticodon
- ribosome
- DNA -> RNA -> protein
- school only
- anticodon
- A and P sites
- codon-anticodon
- ribosome
How the ideas connect
Order the central dogma (school): DNA replication copies the archive. Transcription writes mRNA. Translation builds the protein.
Deeper understanding
Go beyond memorising Translation (school). Connect the definition to reasons, relationships, exceptions, and exam wording.
How the ideas connect
Order the central dogma (school): DNA replication copies the archive. Transcription writes mRNA. Translation builds the protein.
Common mistakes
Exam focus
Core Idea
1. tRNA
2. RIBOSOME
Exam Example
Exam focus
Quick revision
- codon-anticodon
- ribosome
- DNA -> RNA -> protein
- school only
- TRANSLATION (SCHOOL): Translation: mRNA -> polypeptide at a ribosome.
- 1. tRNA: Clover cartoon.
School ribosome. No cell-free synthesis protocol.
For long answers on Translation (school): define clearly → explain the main parts → give one example → state one exam caution.
Exam Focus
Exam Focus
Important points
- codon-anticodon
- ribosome
- DNA -> RNA -> protein
- school only
Important formulas
- codon-anticodon
- ribosome
- DNA -> RNA -> protein
Common exam traps
- School ribosome. No cell-free synthesis protocol.
- Do not treat 1. tRNA and 2. RIBOSOME as the same idea; each explains a different part of the topic.
Long question structure
Definition → key parts → example → exam caution
Common Mistakes
Common Mistakes
- Mistake
School ribosome. No cell-free synthesis protocol.
- Mistake
Do not treat 1. tRNA and 2. RIBOSOME as the same idea; each explains a different part of the topic.
- Mistake
Writing only “codon-anticodon” is incomplete. Link it with “ribosome” and explain the biological reason or sequence.
- Mistake
School ribosome. No cell-free synthesis protocol.
Revision Zone
60-Second Revision
Quick cues from this topic — use them for last-minute revision.
codon-anticodon
ribosome
DNA -> RNA -> protein
school only
Translation: mRNA -> polypeptide at a ribosome. tRNA carries an amino acid; anticodon pairs with codon. A site, P site named. Start: Met-tRNA at AUG. Peptide bo
- Definition
- Translation: mRNA -> polypeptide at a ribosome. tRNA carries an amino acid; anticodon pairs with codon. A site, P site named. Start: Met-tRNA at AUG. Peptide bo
- Example
- Carries one amino acid
- Critical warning
- School ribosome. No cell-free synthesis protocol.
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Exam Practice
Define
Q1. Define Translation (school).
Explain
Q2. Explain: tRNA.
Example
Q3. Give one clear example of Translation (school) and say why it fits.
Mistake
Q4. State one common mistake students make about Translation (school).
Exam note
Q5. Write a short exam note on Translation (school): definition, two points, one example.
Sources & References
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.