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

Why are transport proteins needed in the cell membrane?

To synthesize lipids for the cell membrane.

To provide structural support to the cell membrane.

To act as receptors for signaling molecules.

To facilitate the movement of substances that cannot pass through the lipid bilayer directly.

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Verified step by step guidance

Understand the structure of the cell membrane: The cell membrane is primarily composed of a lipid bilayer, which is made up of phospholipids. This bilayer is selectively permeable, allowing only certain substances to pass through.

Identify the types of substances that cannot pass through the lipid bilayer directly: Large molecules, ions, and polar molecules typically cannot pass through the hydrophobic core of the lipid bilayer without assistance.

Recognize the role of transport proteins: Transport proteins are integral membrane proteins that facilitate the movement of substances across the cell membrane. They help substances that cannot diffuse through the lipid bilayer directly.

Differentiate between types of transport proteins: There are various types of transport proteins, including channel proteins and carrier proteins. Channel proteins form pores in the membrane, allowing specific ions or molecules to pass through, while carrier proteins bind to substances and change shape to shuttle them across the membrane.

Conclude the necessity of transport proteins: Transport proteins are essential for maintaining homeostasis within the cell by regulating the movement of substances that are unable to pass through the lipid bilayer directly, thus ensuring proper cellular function.