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

A lipid membrane is present in which of the following structures?

Cell nucleus

Mitochondria

Ribosome

Cytoskeleton

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Verified step by step guidance

Understand the structure and function of a lipid membrane. Lipid membranes, also known as phospholipid bilayers, are crucial components of cellular structures, providing a barrier and playing a role in compartmentalization within cells.

Identify the cellular structures listed in the problem: cell nucleus, mitochondria, ribosome, and cytoskeleton. Consider which of these structures are enclosed by lipid membranes.

Recall that mitochondria are organelles with a double lipid membrane. The outer membrane surrounds the organelle, while the inner membrane is folded into cristae, increasing the surface area for biochemical reactions.

Consider the other structures: the cell nucleus is also surrounded by a lipid membrane known as the nuclear envelope, ribosomes are not enclosed by lipid membranes as they are composed of RNA and proteins, and the cytoskeleton is a network of protein filaments and tubules, not enclosed by a lipid membrane.

Conclude that the mitochondria are indeed surrounded by a lipid membrane, which is essential for their function in energy production and other cellular processes.