Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 39m
3. Energy & Cell Processes10h 8m
4. Tissues & Histology10h 3m
5. Integumentary System2h 28m
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 System3h 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 statement about the sidedness of the plasma membrane is correct?

Parts of proteins that are exposed on the cytoplasmic side of the endoplasmic reticulum are also exposed on the cytoplasmic side of the plasma membrane.

The asymmetrical distribution of membrane proteins, lipids, and carbohydrates across the plasma membrane is determined as the membrane is being constructed.

Every integral membrane protein has a specific orientation in the plasma membrane.

The two lipid layers may differ in specific lipid composition.

All of the listed responses are correct.

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Verified step by step guidance

Understand the concept of 'sidedness' of the plasma membrane, which refers to the asymmetrical distribution of components like proteins, lipids, and carbohydrates across the membrane.

Recognize that the plasma membrane is composed of two lipid layers, which can have different compositions. This is due to the specific functions and interactions each side of the membrane has with its environment.

Consider the orientation of integral membrane proteins. These proteins span the membrane and have specific orientations that are crucial for their function, such as signaling or transport.

Examine the process of membrane construction. The asymmetrical distribution of components is established during the construction of the membrane, often in the endoplasmic reticulum and Golgi apparatus, before being transported to the plasma membrane.

Conclude that all the statements provided are correct, as they each describe a different aspect of the sidedness and functional asymmetry of the plasma membrane.