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

Biological Membranes

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Biological Membranes

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Multiple Choice

Which of these are not embedded in the hydrophobic portion of the lipid bilayer at all?

Peripheral proteins

Integral proteins

Cholesterol molecules

Transmembrane proteins

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Verified step by step guidance

Understand the structure of the cell membrane, which is primarily composed of a lipid bilayer with hydrophobic tails facing inward and hydrophilic heads facing outward.

Identify the types of proteins associated with the cell membrane: integral proteins, transmembrane proteins, and peripheral proteins.

Recognize that integral proteins and transmembrane proteins are embedded within the hydrophobic core of the lipid bilayer, often spanning the entire membrane.

Note that cholesterol molecules are also embedded within the hydrophobic region of the lipid bilayer, helping to maintain membrane fluidity.

Peripheral proteins, unlike the others, are not embedded in the hydrophobic portion of the lipid bilayer. They are instead attached to the exterior or interior surfaces of the membrane, often interacting with integral proteins or the polar heads of lipids.