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 structure is present in the nuclear membrane (envelope) that is not found in the cell membrane?

Nuclear pores

Cholesterol molecules

Phospholipid bilayer

Glycoproteins

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Verified step by step guidance

Understand the structure and function of the nuclear membrane (envelope) and the cell membrane. Both membranes are composed of a phospholipid bilayer, but they have distinct features.

Identify the unique components of the nuclear membrane. The nuclear membrane contains nuclear pores, which are large protein complexes that span the nuclear envelope, allowing the transport of molecules between the nucleus and the cytoplasm.

Compare the components of the nuclear membrane with those of the cell membrane. The cell membrane also contains a phospholipid bilayer, cholesterol molecules, and glycoproteins, but it does not have nuclear pores.

Recognize that nuclear pores are specific to the nuclear membrane and are not found in the cell membrane. This is a key distinguishing feature.

Conclude that the structure present in the nuclear membrane but not in the cell membrane is the nuclear pores, which facilitate selective transport between the nucleus and the cytoplasm.