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

Endomembrane System: Protein Secretion

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Endomembrane System: Protein Secretion

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Multiple Choice

What are the structural and functional differences between the rough endoplasmic reticulum (ER) and the smooth endoplasmic reticulum (ER)?

The rough ER is responsible for detoxification processes, while the smooth ER is responsible for protein synthesis and has ribosomes on its surface.

The rough ER has ribosomes on its surface and is involved in protein synthesis, while the smooth ER lacks ribosomes and is involved in lipid synthesis and detoxification.

The rough ER and smooth ER both have ribosomes on their surfaces and are involved in protein synthesis.

The rough ER is involved in lipid synthesis, while the smooth ER is involved in protein synthesis and has ribosomes on its surface.

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Verified step by step guidance

Identify the main structural difference: The rough endoplasmic reticulum (ER) has ribosomes attached to its cytoplasmic surface, giving it a 'rough' appearance under a microscope, whereas the smooth ER lacks these ribosomes and appears 'smooth'.

Understand the functional role of the rough ER: The presence of ribosomes on the rough ER is crucial for its role in protein synthesis. These ribosomes translate mRNA into polypeptide chains, which are then folded and modified within the rough ER.

Explore the functional role of the smooth ER: The smooth ER is primarily involved in lipid synthesis, including phospholipids and steroids. It also plays a significant role in detoxifying certain chemicals and metabolizing carbohydrates.

Clarify the misconception: The rough ER is not involved in detoxification processes; this is a function of the smooth ER. Similarly, the smooth ER is not involved in protein synthesis, as it lacks ribosomes.

Summarize the key differences: The rough ER is characterized by ribosomes and is involved in protein synthesis, while the smooth ER lacks ribosomes and is involved in lipid synthesis and detoxification processes.