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

2. Cell Chemistry & Cell Components

Types of Membrane Proteins

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Types of Membrane Proteins

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Multiple Choice

Which of the following components is classified as a peripheral protein?

Spectrin

Glycophorin

Sodium-potassium pump

Aquaporin

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Verified step by step guidance

Understand the definition of peripheral proteins: Peripheral proteins are proteins that are temporarily attached to the lipid bilayer or to integral proteins through weak interactions. They do not span the membrane.

Identify the characteristics of each option: Spectrin is a cytoskeletal protein that associates with the inner surface of the cell membrane, making it a peripheral protein. Glycophorin is an integral membrane protein, spanning the membrane. The sodium-potassium pump is an integral protein involved in active transport. Aquaporin is an integral membrane protein that forms channels for water transport.

Analyze the location and function of Spectrin: Spectrin is part of the cytoskeleton and is located on the inner surface of the cell membrane, providing structural support and maintaining cell shape. It interacts with other proteins but does not span the membrane, classifying it as a peripheral protein.

Compare Spectrin with other options: Unlike Spectrin, Glycophorin, the sodium-potassium pump, and Aquaporin are integral proteins that span the membrane and are involved in transport or structural functions.

Conclude that Spectrin is the correct answer: Based on its location and function, Spectrin fits the definition of a peripheral protein, while the other options are integral proteins.