Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart2h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Steps of Translation

Anatomy & Physiology

3. Energy & Cell Processes

Steps of Translation

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Multiple Choice

Which of the following processes is the first event to take place in translation?

Base pairing of charged methionine-tRNA to AUG of the messenger RNA.

Binding of the larger ribosomal subunit to smaller ribosomal subunits.

The ribosome reaches a stop codon.

The small subunit of the ribosome recognizes and attaches to the mRNA.

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Verified step by step guidance

Translation is the process by which ribosomes synthesize proteins using mRNA as a template. It involves several key steps, starting with initiation.

The first event in translation is the recognition and binding of the mRNA by the small ribosomal subunit. This is crucial for the ribosome to correctly position itself at the start codon of the mRNA sequence.

The small ribosomal subunit scans the mRNA from the 5' end to locate the start codon, typically AUG, which codes for methionine.

Once the start codon is identified, the charged methionine-tRNA base pairs with the AUG codon, setting the stage for the larger ribosomal subunit to join and form a complete ribosome.

After the larger ribosomal subunit binds, the ribosome is fully assembled and ready to proceed with elongation, where amino acids are added sequentially to form a polypeptide chain.