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 Heart3h 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

17. The Blood

Erythrocytes: Hemoglobin

Anatomy & Physiology

17. The Blood

Erythrocytes: Hemoglobin

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Erythromycin interferes with protein synthesis by binding to which ribosomal subunit?

50S subunit

30S subunit

60S subunit

40S subunit

Previous problemNext problem

Verified step by step guidance

Understand the role of ribosomes in protein synthesis: Ribosomes are the cellular structures responsible for translating mRNA into proteins. They consist of two subunits, a larger and a smaller one, which differ between prokaryotes and eukaryotes.

Identify the type of organism: Erythromycin is an antibiotic that targets bacterial cells, which are prokaryotic. Prokaryotic ribosomes are composed of a 50S large subunit and a 30S small subunit.

Recognize the mechanism of action of erythromycin: Erythromycin is known to inhibit protein synthesis by binding to the ribosomal subunit, preventing the elongation of the protein chain.

Determine which subunit erythromycin binds to: Erythromycin specifically binds to the 50S subunit of the bacterial ribosome, blocking the exit tunnel of the ribosome and thus inhibiting protein synthesis.

Eliminate incorrect options: Since erythromycin binds to the 50S subunit, the options 30S, 60S, and 40S can be eliminated as they do not correspond to the subunit targeted by erythromycin in prokaryotic cells.