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 Heart2h 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

Endocytosis and Exocytosis

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Endocytosis and Exocytosis

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Multiple Choice

Which of the following processes and organelles account for the replacement of lipids and proteins lost from the plasma membrane?

Endocytosis and Golgi

Active transport and the rough ER

Receptor-mediated endocytosis and smooth ER and Golgi

Flip-flop of phospholipids from one side of the plasma membrane to the other and the Golgi

Exocytosis and smooth ER and rough ER

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Verified step by step guidance

Understand the function of the plasma membrane: The plasma membrane is a dynamic structure that requires constant maintenance and renewal of its components, including lipids and proteins.

Identify the process of exocytosis: Exocytosis is a cellular process where vesicles containing lipids and proteins fuse with the plasma membrane, releasing their contents to the exterior and replenishing the membrane.

Explore the role of the smooth ER: The smooth endoplasmic reticulum (ER) is involved in lipid synthesis, which is crucial for maintaining the lipid bilayer of the plasma membrane.

Examine the function of the rough ER: The rough ER is studded with ribosomes and is primarily responsible for the synthesis of proteins, including those that are integrated into the plasma membrane.

Connect the organelles and processes: The smooth ER and rough ER work together to produce lipids and proteins, which are then transported to the plasma membrane via exocytosis, ensuring its continuous renewal and function.