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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

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Multiple Choice

Which part of the protein hemoglobin binds and transports oxygen in the blood?

Phosphate group

Globin chain

Heme group

Iron-sulfur cluster

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Verified step by step guidance

Understand the structure of hemoglobin: Hemoglobin is a protein found in red blood cells, responsible for transporting oxygen from the lungs to the rest of the body.

Identify the components of hemoglobin: Hemoglobin is composed of four subunits, each containing a protein chain (globin) and a heme group.

Focus on the heme group: Each heme group contains an iron ion (Fe²⁺) at its center, which is crucial for oxygen binding.

Recognize the role of the iron ion: The iron ion in the heme group can reversibly bind to an oxygen molecule (O₂), allowing hemoglobin to transport oxygen.

Conclude that the heme group is responsible for oxygen binding: The heme group's iron ion is the specific part of hemoglobin that binds and transports oxygen in the blood.